1. Everything takes investment, that's how capitalism works and if we're in a stage of capitalism where we can no longer invest in the future then the future is doomed.
2. It also might get close, be better, or people won't care.
3. People eat meat slurry chicken nuggets without complaint. If they can price themselves cheaper (which will be hard with all the subsidies the meat industry gets to be fair) and cover it in enough batter and spices, and not draw attention to it being lab made ("Naturally tasting meat!") it will sell. Not everything needs to be a steak and eating a steak is not the most popular form of meat consumption.
4. Any reduction is good. Not everything needs to be or even should be treated like it has to be some magic bullet that completely obliterates the competition. Having options is good.