> When a contributor release FOSS, it's fair to compensate if you business rely on it.

Nope.

Put it in the license, sell the software, or work for free, but stop complaining about it.

It's nice if businesses who benefit from specific software packages want to pay or show support, but it's not nice to release something "for free" but then jump on a moral grandstand and demand everyone pay so you can feel good about your ideology at the expense of everyone else.

> The ideal license is the Unreal one free for « Individuals and small businesses (with less than $1 million USD in annual gross revenue)

Then make that your license?