Yea selling an entire OS that consists of a ton of other peoples open source projects—often paid for by other companies to have somebody work on a thing — then

Yea selling an entire OS that consists of a ton of other peoples open source projects—often paid for by other companies to have somebody work on a thing — then when people say “hey we should get a copy of the small tweaks you did to all of those bits” and they say no, seems like a situation where changing the license on enough critical parts force the OS maker to not withhold the software. What would stop Redhat from saying “we’ve decided the only customers we care about will pay us 50k to be a customer, therefore anybody who doesn’t pay 50k cannot get source from us.. and anybody distributing the source code owes us 50k..”