That's fine when it's a megacorp with a team of analysts to pick the best price. Business is cutthroat, and in exchange for a business sometimes getting to win

That's fine when it's a megacorp with a team of analysts to pick the best price. Business is cutthroat, and in exchange for a business sometimes getting to win against its competitors, sometimes their competitors also win against them. It's not fine for grandma. She doesn't have a team of analysts, she just wants her house. The main criticism of capitalism is that it's bad for the little people. Replacing it with something else that's also bad for the little people isn't really any better. You could try to find compromises like locking the family home until death or voluntary sale... then you have extra complications like making it legal for someone to start a small business at their family home without also creating a grey market for people to rent their family homes for other people to start businesses in (or just to live in) and getting the system we already have.