Sure, infrastructure spending in those regions is at an all time high. Roughly 0. /s

Really, Russia is except for some large population centers pretty much bankrupt and it isn't that those parts of the world are so much better controlled it is a combination of them being so much less attractive combined with the fact that what money Russia had to spend on infrastructure it for the most part decided to spend on weapons instead. So they get to keep all of it but at the same time make their population so impoverished that once their natural gas and oil run out the whole thing will collapse even further.

I expect that by that time China will mop up the remains of the East of Russia without too much in terms of resistance because Russia simply won't be able to hold on to it.

The West does not have the appetite for the sort of quality of life Russians must lead to allow this as evinced by the differences in the healthcare budget and military spending as a percent of GDP between Canada and Russia.