The Foundation for Government Accountability - a Florida-based lobbying group backed by the richest 1% - is working to get basic income experiments banned by state legislators across the U.S.
As a well-known quote often wrongly attributed to Mahatma Ghandi says, “First they ignore you, then they ...
I think the main reason is that if you had an UBI, you'd be way more eager to join a union, strike, or quit a shitty job. They know their fortune is built on labour exploitation, even the supposed 'tech' companies.
Other businesses are competition. Arguably worse than quitting that shitty job; not only aren't you willing to work for them for a shitty job/wage, you're making it more likely they'll have to compete for labor and profits.