I can't think of any game that has actually taken founder pack reserved names away from players tbh. That's seen as an exclusive perk, it's just like how kickstarters are given certain perks for backing a game. One game I can think of off the top of my head is Friday the 13th because many kept asking for an exclusive skin that backers were told they would be the only ones to have access to, that's no different than buying a founders pack to reserve a name because you're under the impression that you will be the only one to have access to that reserved name.
It might sound silly but at the end of the day it's like they paid to have that name exclusively for them. The whole borrowing a founder's name could be bad because think of how that could ruin that person's rep in game if the person using their name is being an ❤ ❤ ❤ ❤ to others and then the founder member returns to the game.