Seen from a certain angle, the real question is: why don’t more companies do this? This isn’t charity, this is enlightened self interest paired with understanding that pissing off your free supplier is a bad idea.
I'm sure many devs and publishers are filled with people who know that acts like this can garner trust and future support for their company, but will have efforts cut short because someone above complained that the line didn't immediately go up.
In every service or product I've bought, going public (and prep to go public) has preceeded a decline in quality. The day Valve goes public will be the day its downward trend starts, because its customers become the shareholders.
What exactly?
Whole big tech contributes to linux. MSFT is probably biggest of them
1. Support is expensive for the layman/small business, but peanuts for large companies compared to hiring their own experts. And faster to ramp up/down. The strong arming stuff like Adobe can do to companies is mitigated when you can hire PR/Dev relations dedicated to strong arming their support companies.
The peanuts add up, but it's not like most companies these days are thinking long term.
2. Liability is almost as important as support. Being able to point fingers to someone else during disaster (e.g. Crowdstrike) can also save a lot of money for companies taht have lawsuits thrown at them 24/7. A small linux team won't want to claim liability. it's pretty much the main "downside" of most FOSS licenses.