I don't know why people think that Google having multiple billions should mean they are willing to spend billions on every thing they do. That is not sustainabl

I don't know why people think that Google having multiple billions should mean they are willing to spend billions on every thing they do. That is not sustainable. Every project has a value to that company and any sane company will only spend whatever level matches that. They are paying for, say 100 engineers (just making up this number). Isn't that enough?