I feel like when people say that the industry would sell more if there was less fanservice, or really less/more of anything, they're overestimating the importance of their own opinion. Do you really think anime production companies are that clueless of their own market? They learn what sells the hard way, through the success and failure of their own product, and they surely have a better idea than some random dude on the internet who's probably never even run a business. My apologies if you are actually a successful and esteemed businessman, but that's a safe assumption for most people who think they have the formula to make anime sell more.

Also, I've got to go on the attack about one more thing. The attitude I see from most fanservice detractors is that it is somehow inherently degrading, like a boob shot cancels a face shot, or a pan up across bare legs erases a character's personality. This weird bias is even codified by a word: "objectification". It's common usage implies that we're somehow viewing women as objects any time we view them sexually.

Now, I'm not denying the concept of objectification outright. It exists, and you see it all the time. The concept of a "tit man" versus "ass man", random fetishes like "thigh gap", trophy wives, ring girls, a horrible joke made in high school that a certain girl would look better with a bag over her head, etc. The idea that I take issue with is that viewing a woman sexually is the same as turning her into an object.

In most anime I watch with fanservice, the fanservice is not applied in such a way as to erase personality. If objectification is to be a meaningful concept, then we need to restrict it. When talking about objectification, you showed several clips from My Hero Academia. In that show, I can not think of one character who is more like an object than a human being.

Indeed, the trend I see in anime is actually less objectification than western media, but that objectification being replaced by the even more problematic fetishization of personality types. Once again though, I do not see that in all of the shows with heavy fanservice, especially not the more mainstream ones. And also, of course, that problematic fetishization is hard to differentiate from merely shitty writing.