Oh poor you, all these people providing you with free tools. If it solves your problem, use it, if it doesn't don't.
Do you really believe that the motive behind this charity is 100% altruistic?
Oh man, I gotta an ocean front house in Arizona to sell ya!
Joking aside, these people publishing and releasing these frameworks to the public at min looking for reciprocal treatment in terms of improvements to their product made by the community and the general adoption of it by wide segments of the community making it easier for them to recruit and integrate new team members with minimal costs in training and sunken costs.
So, this symbiotic relationship between us devs and these corporations is neither altruistic nor patrimonialistic