I think crowdsourcing data's more of an open source thing. I don't think Google's ever been into that? Their approach is more "we're gonna scan all the books in the library/photograph every street in the world". (Interested to hear counterexamples).
crowdsourcing data is exactly what the Googs does. CAPTCHA to train it's models of data of dubious origins is the SEP (someone else's problem) nobody wants to talk about
They’ve crowdsourced a lot of their Maps data for information on specific businesses through the Local Guides program.
Also we local guides provide streetview maps where there previously were none.