This would cost Switerland about $168B annually, which is equivalent to their total tax receipts today. I assume that they could get rid of a number of governmental services, but seemingly you'd need to increased taxes above the current 40% income tax level. it's hard to see how the economics could work.

That said, it would be interesting to see how basic income might affect entrepreneurship in the US. Entrepreneurs might not have to move to high cost cities like San Francisco and maybe this would encourage more remote work.