It has already been established both by the lore of the fiction and logical real arguments that the reasoning behind this question is just for giggles and "there's nothing better to do"/"WOAH! Duuuuude! I NEVER THOUGHT OF IT THAT WAY!" realization discussions. It's fun to discuss, but let's not take it too far alright: It's not that bad, maybe not good, but it's not "OH MY GOD, THIS IS THE MOST TERRIBLE THING IN FICTION" levels. In reality, Pokémon ethics aren't that bad.
First off, how are Pokémon surviving in the wild? Most are probably doing alright but some are shown to have suffered at the hands of nature or other Pokémon that weren't provoked by human society whatsoever. Those that were hurt by humans were hurt by the villains and jerks we were supposed to hate. So, their lives before were just as good at best and as bad as anyone else's at worst.
Second, Pokémon have been let go before in the anime when the trainer felt it was the right thing to do and it is very easy to do this in the games.
Third, while some might argue it's Stockholm Syndrome, Pokémon generally warm up to the idea of being with a trainer and even getting in Pokéballs if they weren't already fine with this to begin with as some are shown to be. A lot of people argue the fight to catch is a test by the Pokémon to see if the trainer is worthy rather than an attempt to stop abuse. Pikachu flat out refuses to ever get into one with Ash. So, while some are probably following through on Stockholm most seem to be content with the idea the same way your pets don't run away usually. They don't have to listen and don't seem to be overly psychologically or physically abused into doing so.
Heck Pokémon even fight on their own to show dominance, compete, or have fun. They even KIND OF had their own skirmish in Lucario and the Mystery of Mew, the last of the movies I saw I believe, alongside humans before Pokéballs existed and with the Pokémon having a clear strength advantage and no reason to listen or obey unless I'm forgetting something(and assuming Sir Aaron's Aura controlling ability wasn't widespread across the two armies). Lucario is Sir Aaron's best friend, they practically are brothers with Lucario being the worshiping, in a kind of sad way, little brother. What we're talking about here is even a big theme in that movie, Lucario thought Sir Aaron betrayed him when he locked him away in a staff. He constantly berates Ash on his belief that Pokémon and humans can ever be friends. We find out Aaron did this because he wanted to protect Lucario from possibly dying in the battle or stopping him from dying, which would be the inevitable result of him using his aura to make the battle cease (it was a cliche plot device about using this tree of beginning and working with Mew to make the armies understand their differences or something).
The only thing I agree with is how obsessed everyone is with Pokémon and little else. Seriously, what is wrong with them? Then again there do seem to be a lot more Pokémon in their world than animals in ours. You see them every step of the way for obvious reasons. Maybe we'd have as much interest too if animals were that prevalent everywhere and acted more similarly to Pokémon. It'd help if our suburbs and city were less urban and more natural with urban conveniences like it seems the way it is in a lot of places in the series too; though they had cities as well obviously there weren't as many nor were they as big as some of ours. I would like to point out that not all 10 year olds go out to catch Pokémon. Weren't some people shown to have remained home by choice or get a career not related to training or, at least, CONSTANTLY using Pokémon?
