You're entirely missing the point. You could easily say the damage is already done even if Apple eventually gets forced to stop making Google search their default search engine on iOS. The reality is that bundling software matters way more than you realize. Google has paid an estimated tens of billions a year to Apple to maintain the default search engine setting. That's despite their massive market share lead over competitors.
At minimum, this ruling will make future competitors believe it's more feasible to be successful in creating a competitor to Teams. There will be some similarities to the way Firefox and Chrome eventually competed after the Microsoft antitrust case regarding Internet Explorer in the early 2000s.
And finally, when current Microsoft licenses expire or MS sales teams get into talks with future, net new companies, they will not simply be able to say Teams comes for free as part of their other licenses.