Not OP, but as someone who is not vegetarian/vegan and is from a country with a cuisine that revolves heavily around meat (Mexican) I have to agree with OP.
> If you want to get people to switch to meat alternatives, you have to keep everything that's great about meat (taste, texture, proteins), while removing everything that's bad about meat (slaughter, livestock industry).
I think one thing is making sure it's great, and another thing is making sure it's the same, and you can have something that's great and heavily impacts the market without having it be the same.
Just thinking of a random example where this worked; MDF is very much not wood, but it's pretty great for most things. People still buy a lot of wooden furniture, surfaces, etc but for a lot of use-cases MDF does just fine. MDF isn't trying to have the same weight, the exact same texture, or be as solid as wood. It's another material and it's marketed as another material, not as "replacement wood" or something along those lines.
Thinking of an example where this hasn't worked; Stadia. Google is very much trying to replace consoles and is focusing on AAA games, but the thing is, as it stands today, Stadia is not a console replacement. The way google is positioning Stadia though puts it in the eyes of hardcore gamers who care about the details: the latency, the streaming resolution, etc. Perhaps if they weren't trying to sell it as your next AAA-game console, they would attract a section of the population that just wants to play games easily, and don't care so much about the specifics.
The goal here is to not fully replace the market, but shrink it.
Another point worth making is that it's hard to imagine we can reverse the trend in global warming keeping excessive consumer habits— people need to change too. Sure, electric cars will consume less CO2 and they are an easy short-term solution in a car-centric society, but cities need to be planned better so car use in general decreases. Sure, recycled plastics can reduce or plastic waste, but we shouldn't be producing so many water bottles in the first place. Plant-based "meat" are likewise a step in the right direction, but it's also the case meant consumption is just very high. Trying to offer solutions that don't tackle the underlying problem make hard to guarantee long-term sustainability.