The developer chose themselves how much they would want others to mod there game just look at Sim City 4 it was never MP but heavily moded by peoples and open ttd was open source never was for make any money so i don’t get what you try to say?
Also in what way are MMO player more loyal to there developers then Tycoon players? I can say I most probably spent more time playing open ttd then most MMO player playing there game heck i have been playing ttd since 90s.
