That's why you want inter-professional union.
Of course that system has been built over decades and the way it operates and negotiations are handled can vastly differ between neighboring countries (think France which is more confrontational at first and Germany where unions are more integrated into the process) (plus, unions have different political outlooks, so it's not one size fits all).
In countries with a strong social net unions use their affiliate's entrance fees to guarantee they are paid for striked days. Also some countries have laws that forbid employers to punish strikers (granted they announce in time they are going on a strike). Some sectors (medical, police, etc.) have some restrictions on that "right to strike".
That's just a really short resume, though and I don't know if such a thing could be possible in the USA.
They want a nice, clean work environment for their employees. So you need janitors.
Want to provide catered lunch? You need food service workers.
And the bar for "good enough" at those levels are much lower. You don't need a 5-star lunch every day. You need a decent lunch that's better than going out. And things can only get so clean.
Also, the parent's question was about Google.
https://ir.aboutamazon.com/news-releases/news-release-detail...
Employees (full-time and part-time; excludes contractors & temporary personnel): 575,700
As dang said, if you're going to make a big claim, at least attempt to be right.