How is this any different than what we have currently? It could be argued that many employed persons are currently destroying wealth through unethical practices encouraged by profit/rent seeking that is prevalent in contemporary economy.

A basic income as you have noted will also allow for people to open 'good businesses' without as much of a pressure to turn a profit. Ideally society would start to look down upon the "I work for <expletive>'s people/companies because I need to pay the bills" attitude that is pervasive today and people would start taking their responsibilities to themselves, their community and our greater environment more seriously.