These are very different scenarios though.
iTunes wasn’t a secret. Apple didn’t bait you. It was well known you needed to use iTunes.
On Android you have regular apps that turn into Malware. Samsung will sell you a phone/TV then introduce/increase the amount of ads/malware with a software update.
The problem isn’t that there are ads. The problem is that the ads are introduced after you’ve already purchased it. This doesn’t happen with Apple, and that’s something many people value more than being locked into a walled garden.