Note that SM64 (and OoT, but I don’t think that’s on Android yet) are special cases. These have been reverse engineered by the community to the point that they’ve manually decompiled the entire game, and then separately ported to modern platforms. The project in the OP is different, as it’s made for games that don’t have this effort behind them
Isn’t the new model based partly on game and/or studio revenue? Sounds really scummy if you put it that way: Unity announces new pricing structure -> costs for devs rise -> they increase game prices -> now they reach the revenue threshold quicker and more often -> costs for devs rise…