They have more power. Let’s say they get what they want. Double the working conditions and double the wage.

Now what?

Everyone needs to eat, needs to sleep. Ok let’s raise the prices. They can afford it. I.e they can no longer afford it.

Meanwhile, since food costs more so farmland costs more. Increasing barriers to entry.

So they strike and ... the cycle continues.

Basically, goods with the highest price elasticity of demand win. And they win by leaps and bounds.

We would first need to correct the monopolistic behaviors by corporations which is currently being encouraged by the US government. Then UBI would work.

OR

We could do a daily proportional wealth redistribution (i.e. UBI based on a percentage of total wealth, including assets, rather than a static number - and we could do this at a daily cadence). This system would hurt corporations which have goods of lower price elasticity of demand, but at least it would be good for individuals.

OR

We could have it as state run/sponsored, i.e. the government runs farms and sells food, or companies run food production and sales, but the government pays for it. This has quality concerns, especially when it comes to regional distribution. But hopefully, like the US schooling system, maybe a combination of both government run, and government sponsored (i.e. charter school), and privately run (i.e. for the ultra wealthy), would create a healthy enough environment. Ideally, since this doesn't depend on the quality of local teachers (i.e. food doesn't care if it is getting re-allocated to rural Arkansas), it would work out better than the US schooling system. Note: This doesn't work as well for housing.