You don't move towards Capitalism if you vote right or move towards Socialism if you move left. You don't change the entire base like that. Eventually, a build up of quantitative pressure will result in a qualitative change, but you won't be halfway at any point.
It really isn't possible to have Capitalism, a system where private ownership holds the large firms, key industries, and state power, while genuinely restricting it. Regulations in Capitalist countries serve to punish small firms and ensure large Capital succeeds, it solodifies their status.
"Economic theory" does not suggest workers and owners reach a balance. Economics and history prove that wealth and Capital concentrate in fewer and fewer hands, as large firms supercede the small ones. Further, financial Capital is Capital of a different sort, and is the means by which the US and EU Imperialize countries in the Global South. Stiglitz may make a decent argument rhetorically as you read, but his writings don't hold up to history while Marx's do.
I'm aware of Georgeism, it isn't some grand secret trump card to pull. It's just a more restricted form of Capitalism, it doesn't address the base. Land Value Tax may be a neat idea, but it would only slow the progression of Capitalism to fewer and fewer firms. Further, Capitalists would just wind it back when it suits them, even if by some miracle you could get them established.
The complicated system we have is because of megacorporations lobbying to make it that way. We cannot push against that. Further, the vast rise of large industry and megacorps plays a larger role in society than housing, which is still important, but not the dominating aspect of the economy.
Georgism isn't really a part of the problem, but it's also not part of the solution.