So let's now compare a neighbour country, that started from the very same GDP per capita level in 1990, also with a lot of ethnic Russian population, the same geography - one has $19'445 per capita, while the other has $6663 per capita.
The only difference being one is aligned with EU, the other - with Russian.
I think this explains pretty well why people in Ukraine, Belarus - and yes, Russia - are quite disappointed with the Russian model of economy.