Google has been supporting Blender for over 20 years, initially through Summer of Code [1, 2], and also via corporate sponsorship once Blender started offering it.

And I'm pretty sure I've seen most of the other big names in tech on the sponsors page for many years now.

[1] https://en.wikipedia.org/wiki/Google_Summer_of_Code

[2] https://code.blender.org/2011/04/google-summer-of-code-2011-...