This is the first thing that came to my mind, too. I'm a omnivore myself and admittedly love my meat, but it's very bad for the environment and I can't deny the ethical concerns are there. At the very least, I can see low key vegetarianism being the norm in 20 years, where the norm would simply be to not have meat products, and meat might instead be a more niche diet or simply not the norm.

If lab grown meat manages to become scalable enough, I can also see that nearly completely replacing "real" meat. Once it's at least as affordable, I think "real" meat's days would be numbered. It'd become a thing only for purists/elitists/exotic diners. I would even expect that lab grown meat would eventually become cheaper than "real" meat simply because it would be far faster to grow and take fewer resources than to grow an entire animal to adulthood.

As an aside, would labe grown meat be considered vegan? I think it would be since no animal is harmed in the making of it. I imagine many existing vegans wouldn't want to eat something that tastes like meat, but it would be the thing that converts practically everyone else. I sure don't see why I'd ever want to eat "real" meat again if I could get a comparable lab grown meat that doesn't harm animals and is better for the environment. That's just a win win.