When corporations take over the central planning, what forces should counteract? Before you say 'market forces', you have to address the present case, where three music owners control 60-70% of the market on terms favorable to them rather than to customers or creators.
The real issue for creatives is there is too much competition. Too much to choose from. Supply up, demand is largely constant.
Don't buy their product, buy from someone else.
The complaints here are from people who want to keep using a convenient platform, just insist it produce something different. Or, they are complaining that consumers are happy with that platform instead of what they think the consumers should be happy with.
The problem in any market economy that underlies most complaints is the realization that you have been judged to not be valuable. You are producing creative things, but people don't want them. It's maddening especially if you're entitled. At risk of Godwin, one might call this the Hitler problem.
So far, we haven’t been able to find a way to concentrate power without corruption. The lesson is: only give the government as much control as necessary, never more.
In a system that is more socialist, the people forfeit their power to the party. Super easy for one party to dominate in these systems so votes mean little and you enter a doom loop of inefficiency caused by corruption.
In a system that is more capitalistic and consumer-based, the people retain a good amount of their power through purchasing choices. It is also tough for any one political party to take complete control, so the people also retain power through votes.