Yeah I wouldn't say it would be 100x more prosperous. Look at the 90s under US puppet Yeltsin. That was the time to show how good cooperation with the west will be but didn't happen. Russia was treated as any South American or African country was treated. I'm not from Russia but heaps of westerners (not only US) came to buy up businesses and spread Christianity. They literally did nothing in terms of investments and creating institutions except for capturing mining rights.
Although I would add that I personally think Russia has not really developed much in the last 10 years under him. He really needs to invest into changes.
This is a very inaccurate picture of that period. Yeltsin wasn’t anyone’s puppet for sure and Russia was not treated as a colony. All economic struggles of that period happened for several purely internal reasons: transition from planning to market economy cannot happen instantly - a lot of processes had to adapt and recalibrate; rule of law was not established, because the legal system and law enforcement had to be reformed and a lot of new laws had to be written (e.g. modern law on bankruptcy was enacted only in 2000s IIRC); dissolution of USSR broke a lot of economic ties. The West actually helped a lot in that period of time, offering credits, even sending humanitarian aid. Western investment from major consumer brands like Unilever, Coca-Cola or P&G brought management skills and standards of work, entrepreneurial culture was heavily influenced by America etc.
Although I would add that I personally think Russia has not really developed much in the last 10 years under him. He really needs to invest into changes.