In other words, are you asking what would happen if an altcoin was developed where the anonymous users are politely asked to pinky swear that they will not fork it?
It wouldn’t be much different than the status quo.
No one of the direct forks of bitcoin currently compete with bitcoin for the core purpose of being a currency and not just speculation.
What would happen if a altcoin was developed where users had to precommit not to forking that coin?
How exactly could users of something anonymous precommit to not do something?
volition
In other words, are you asking what would happen if an altcoin was developed where the anonymous users are politely asked to pinky swear that they will not fork it?
Probably nothing.
They could do it, but there wouldn’t be any strong reason for anyone to trust that they would.
It wouldn’t be much different than the status quo. No one of the direct forks of bitcoin currently compete with bitcoin for the core purpose of being a currency and not just speculation.