I think the middle ground there is not "one engine for everybody" but probably "one set of rules for a long time". The money game is really worst with this set

I think the middle ground there is not "one engine for everybody" but probably "one set of rules for a long time". The money game is really worst with this set of ever changing regulations, which favors large development budgets for rapid adoption. If regulations stay the same for 10-15 years, there can be learning and progress and technological competition even for the smaller teams.