Capitalism is not just "the existence of money and markets". You can still have money and markets without capitalism.
Money yes markets ish. A pillar of capitalism is the private ownership of capital, without private ownership many markets no longer exist (talking the economic definition of 'market').
The real estate market would probably look much different and may even dissolve entirely if you forbid private ownership of real estate capital. I don't think this is a groundbreaking insight, I'm just clarifying for those who are careless about their use of words.