It would, for example, avoid that you have 1'000 defunct OBikes in a relatively small city (~90km2) basically cluttering up everything, but being of so bad quality that they're borderline useless. Even if you're stupid enough to cough up the required deposit and download their dodgy app.
Same bikes which need to be removed not even a year later on the taxpayers dime.
It would help to not make entire town districts unafordable and unhabitable in some cities by the likes of AirBnB waltzing in for fun and profit.
I could come up with more examples, Uber being the most obvious.
I see a city as a rather complex organism, with a lot of competing factors and variables, which require careful balancing and calibration. There's a reason that cities prepare master plans about development for the next two decades.
If the burghers believe that change is required it's up to them to initiate such change. It should not be up to some venture capital fueled SV companies, which use public property for private gain, to make such decisions.