Of course comparing that to the United States gives you a pretty good idea of it's depressed population growth. It was around 45-million people larger than the US in '91 and is now almost 22-million people fewer.
It's worse than depressed population growth. With 171 deaths for every 100 births, Russia's population is actually declining at the fastest rate of any industrialized nation. If this trend continues -- and there is no sign it will not -- the Russian government estimates her population will fall to 102 million by 2050 (and independent estimates place the figure as low as 70 million). This depopulation has enormous implications. For instance, several of China's most populous provinces abut three Russian eastern provinces that, already sparsely populated, have lost 6 million residents in the last decade. And these Russian provinces have some of the world's largest reserves of strategic minerals. These are the kinds of dynamics that, unless very adroitly managed, eventually unleash armed conflicts.
The factories around St. Petersburg theory makes sense. But let me ask, where else would it have been logical to place them? . . . Could the government have intentionally wanted these "susceptible factory workers" concentrated in area where they could be closely watched? Was that not perhaps a consideration at the time, and if others had suggested it being a bad idea (sounds like something Witte might have realized) is there any indication that Nicholas was told but dismissed of the concern?
There were large industrial concentrations around Moscow and many other large cities, especially in the Urals where raw resources were relatively nearby. So I am not arguing that large industrial complexes should not have been allowed around
any city. But St. Petersburg, as both the political center of Russia and the residence of the imperial family and senior nobility, was especially vulnerable to revolutionary pressure becoming exaggerated. In fact, it took the February Revolution some months to take firm root in other Russian towns (except for Moscow) and the countryside. This was very similar to the situation that obtained with the Paris Mob in 1789 where the extremism of the capital exerted a magnified effect on events due to the proximity to the political epicenter.
While I understand your point about commuting, most of the factories in the large cities ran on a highly seasonal basis with large influxes of labor from the countryside migrating into the cities. Except in the older industrial regions and long-established factories such as the Tula steel works, factories were not built where they were in order to take advantage of an existing, trained urban industrial workforce. In fact, the government and the factory owners had to devote huge effort to teaching reading and math skills to these migratory workers so that they could perform key factory tasks, such as tool and die making, machine maintenance, and pattern making. It was this educational activity -- and the reading clubs and popular newspapers that it spawned -- that provided the crucible in which so much work in preparing the urban revolution was done . . . far more so than in the universities, which touched very few of the migratory workers.
I suspect that St. Petersburg was chosen less because of where the workers were and more because of where the factory managers and owners wanted to be.
I do not know what Nicholas might have been told about the risks, but Bloody Sunday should have alerted him to the risks of having workers think they were in a geographic position to exert pressure on the tsar. (This was the reason that Alexander III headquartered in Gatchina and that after 1905 Nicholas largely abandoned St. Petersburg in favor of Tsarskoye Selo. In fact, it was one of the reasons that Louis XIV developed Versailles as his seat of government after his childhood experience with the Fronde. However, as the march of the fishwives on Versailles and Nicholas' family being caught at Tsarskoye Selo in Feburary 1917 proved, a dozen or two miles is not far enough.) As Stalin was to prove during WWII when he uprooted the bulk of Russian heavy industry in a few short months and moved it east of the Urals to put it beyond Hitler's reach, an autocratic government is capable of taking draconian steps when the risk is understood.
As I learned after many years of dealing with the differences in union and worker behavior in plants located on the same site as senior management teams as opposed to their behavior in satellite plants, Proximity is Politics.