- Universal Basic Income does not mean an increase in Government costs so doesn't need "paying for".
 
- Owning public utilities does not mean increased costs (Gov. can borrow much cheaper than failing private companies and no shareholder dividends)
 
- Thinking does not cost (so "Banks and bank loans might need thinking about" is free)
 
- Rent controls don't cost taxpayers.
 
- None of these measures mean lower economic activity so "what do you replace the economic activity with" is not relevant.
 
		 
		
	 
Rent controls backfire. They've been tried. Rent control either causes housing shortages because private landlords exit the market, or steep upward steps in rent when tenancies change. Or both. See Scotland for a recent example. I don't know what problem it is a solution for. 
Who do you think pays for universal basic income, the tooth fairy? It's not the same as minimum wage. Look it up. 
Owning public utilities. Sounds nice, but if you don't own them already you need to buy them first. That requires money. 
The nonsensical argument to abolish private landlords (quite apart from the contradiction with rent controls) would remove a chunk of the economy. It is clearly very silly. 
If banks are not creating money, what is it that they are lending?