Yes but no solo developer with a single brain cell is complaining about steam taking 30% of the cut because they know that the value steam offers them is way less than that 30% cut.
Are all publishers like that, to all devs? You and I can't say. If all the money goes to Steam, it is a blackhole for the money. It is money that doesn't go into the development and marketing of a game.
As someone that has assisted indie developers for years, I don't think I've ever heard of a publisher that didn't borderline extort his devs except if the head of the dev studio was playing golf with the CEO of the publishing company.
With all due respect, fuck off. Publishers have been extorting the game industry for over 2 decades and yet people like are sitting around wanting more money from them. Go shill for some CEO but stop bothering me if you don't want to see the fucking truth.
Also, whether or not all publishers are all extorting devs is up to the courts to decide. To be fair, they probably thought a class action lawsuit was better because the original lawsuit was for a publisher which was as bad as you say. All I ever said was I'm okay with the case to continue because of my thoughts that none of you hive minders really could disprove.
I am well aware of that. But AGAIN, no dev that is self-published complains about the 30% cut because if he did all of the stuff steam does by himself he'd be paying WAY more than the 30% steam charges.