UBI needs to happen at some point. There’s ways to find it in a capitalist society. Just means everyone needs to be a capitalist for it to work. Which means owning a non-sellable stock that guarantees an income that meets basic needs. Could be attached directly to your SIN number.
This isn’t socialism by the way before someone claims it is. It’s a more complete version of capitalism. You’re only a capitalist if you have capital, own land, a business or the stock/deed that represents ownership of something, that creates more capital. Most of us aren’t capitalists, someone else merely pays you for your labour, or you own so little as to make your capital irrelevant.
We can’t trust people not to scam the system but we can take direct access away from those that do. They’ll still have that income, it will merely be limited in what it can buy. Mith will hate it.