Man, Epic must be patting themselves on the back for all the money they paid getting people to believe 30% was outrageous, because it’s paying massive dividends.
It may shock you to know that before Steam, your options were to fuck off or offer your product in a store where you would only get 30% of the profit, with the rest going to the publisher, the retailer, licensing, etc. These days it’s closer to 50% for physical copies, and Apple/Nintendo/Sony/etc all standardized with Steam on you getting 70% for digital.
Don’t like it? Pull a Valve and make your own alternative that’s better. If you build it, they will come… which is why nobody uses EGS.