There's plenty of cow-free milks in the supermarket already: they're called nutmilks (ex: soy milk, almond milk, oat milk, etc). They've been around for decades.
The main thing I'm waiting for are good vegan versions of sharp cheeses like sharp cheddar and blue cheese. A good vegan smoked gouda would be nice too.
I've yet to taste creamy vegan ice cream that's on par with the best milk-based ice cream, but at least vegan ice creams can be pretty good and getting better.
They often come from most amoral companies in the world, ie Monsanto which clearly don't care about human health and life, only profits at all costs. They are often pushed by political means (ie US business folks coming ie to UK to lobby for lowering food safety standards compared to those from EU right after it was clear Brexit is happening).
You want to solve world hunger and feed those poorest and most unfortunate that would otherwise die? Sure go ahead, but at least attempt to be moral and show some serious research into collateral damage. You try to push that cheap untested crap on one of the world's most rich and free regions? Well clearly your chops are not good enough right now.