The cost is a big turn off for most people. At grocery stores near me, the Impossible and Beyond products are more than double the price of the meat products they are imitating. In part because livestock feed is hugely subsidized by the government.
If the plant-based meat alternatives could gain efficiency through scale and experience to lower the cost below animal meat, we would see way more people trying them and finding what dishes they work best in, which would feed back into scaled market demand. But I don’t see that kind of explosive growth potential at current price levels.
When the underlying problem is insufficient supply in the locations people want to live, anything that gives average person more purchasing power (such as making banks comfortable with larger loans) just drives up the price even higher.
Densifying metro areas (the places people are moving to) is the only real solution. Otherwise the price has to be unaffordable for the average person, to drive them into finding a way to live in a more rural area or to put up with a multiple-roommate living arrangement.