> It’s sensible to buy a support contract. It’s charitable and good PR to give them money.

If the development of an open-source project significantly affects your commercial product, there is nothing charitable in supporting it: because you are the one who needs that project to survive.

Not really, it's open source. You could just start putting resources into it yourself. If you back up to a local copy, it's not like that source code is just going to disappear.