Those are hilariously small numbers. The accounting departments of those companies probably wouldn't even blink if one extra zero were added to the end.

If you're funding open source products like this, companies should fund at least 3-5 full time senior engineer salaries per year. We should praise "donating" $3 million to $10 million per year. Anything less is a joke seeing these amounts are from multi-billion dollar companies built on free software.

Imagine you lived next to a free buffet that only accepted donations. You ate there every day of the year, saved thousands of dollars over buying and making your own food, then thought you were being "generous" by dropping them a tenner at Christmas. Also, you're a full time tech employee who cashed out millions in stock and have several million dollar apartments in cities around the world. But, sure, you're generous by dropping them $10.