That's the great thing about open source! People form groups and spend their own time/resources to build what they want instead of waiting around for the corporate big brother to build it.
You aren't donating - any more than you're "donating" to Comcast when you pay your cable bill.
On the Comcast side, they can get fucked. My whole city pays them a crazy high fee for internet and more a month with very little improvements being made in infrastructure. Sure they now a have a remote with voice commands, but I and most people I know are almost never near the advertised speeds. At least the latency is good.
There is no fiduciary requirement to put profits above all else. In fact there is no fiduciary duty to make profits, just basically to do what's best for the company. There is no short term time frame listed. If there is a requirement to make profits it's not because it's a responsibility. Shareholders may want it but no one gets punished if a bad decision for the long term success of the company doesn't pan out. There's numberous examples of CEOs that attempted to pivot when it wasn't the most profitable course of events and then receiving a nice severance more than most employees make in a lifetime of work for failing.
You encourage what you measure against
Knowing what to measure against is harder the higher you go up the corporate ladder.
Incentives get skewed towards short term employees and short term rewards. Companies treating their employees as resources has only hurt loyalty. No one starts at a company in the US anymore unless they're average or below workers. The whole idea of companies not being willing to pay existing employees what they would pay a new hire is stupid too. You're willing to pay more for someone you're going to have to train and is a literal risk, versus a known commodity with known output. Generally you pay more for stability on the market not less.