This startup is growing a specific species of fungus that is high protein and vitamin rich. I haven’t tried it but reviews so far are saying it cooks, tastes and feels like meat.
That's not exactly lab-grown meat. But to your question, it's hard to take bets on individual things, so I'll answer this way: I'll bet against anything lab-grown or highly processed (Meati included), and I expect to make money on average.
How is it highly processed? They are mass producing a naturally growing fungus, not unlike farming mushrooms. They seem to be adding some seasonings and sodium before packaging but thats not "processing" exactly.
It's transformed from its naturally-occurring aspect into something resembling the texture of meat. That is processing. I suspect that it's also a non-trivial amount of processing, but I could be wrong. Contrast this with grabbing a handful of chanterelles and putting them in a bag.