It’s because Google did a lot of things that Apple didn’t that was found to be anti-competitive.
https://www.theverge.com/23959932/epic-v-google-trial-antitr...
https://www.theverge.com/23959932/epic-v-google-trial-antitr...
And what is the definition of nasty here? It's very subjective. Apple doesn't own the mobile market and are below 50% control of it so they are not really a monopoly. I'm also not sure how you can use anti-trust or anti-monopoly against them when they have been found again and again to not be a monopoly.