As I said - USSR was by no means holy, and some regions, particularly forcefully occupied states of Eastern Europe, gained quite a lot from its downfall.
I’m talking about a more global effect, particularly economic and political pressure USSR exerted on major capitalist powers. It was a simple sign: “the policies we implement do work, your workers can and will demand them, and you better do it or the same revolution will strip you out of all your riches”.
Pretty much since its inception, USSR was able to literally shift global policies regarding working conditions and universally available services. It’s after severe protests in pre-Nazi Germany and USSR that all major powers suddenly decided to shorten the work day from 10-12 hours to 8, then from 6 days a week to 5, introduced (except for US) full universal healthcare and higher edication, and many more policies we take for granted today.
Then, when USSR went into its demise, the improvements stopped. The income inequality rose significantly in most major economies, going straight up through the roof in the US, UK, Canada and Germany. Same happened to the post-Soviet countries themselves, even though it has been at first greatly compensated by the sheer volume of money coming from foreign investors. Social services started to receive less funding, and population is more in debt than ever.
If anything, USSR was the force that kept major powers in check and didn’t allow capitalism to do what it does best - concentrate wealth, population be damned. I know capitalism can look like magic when your country has got significant economic boost in living memory, but global trends show a very different picture.