How many jobs have Uber and Amazon destroyed? How well do the jobs pay? How much work do they demand for that pay? What's the net? Do they create any negative externalities?
You can't just look at revenues without looking at expenses.
For Amazon the claim is more obvious - picking up the "killing local business" and "killing US suppliers" torches from Walmart before them - but I would be a bit suprised if there were any cities where there were fewer transportation drivers now than pre-Uber in the US. Taxis in the vast majority of the country were pretty few and far-between.
They are very different types of tech company; not as completely different as something like SaaS with no cost of physical goods at all, but Uber (while hardly an example of a good citizen company) is not really the sort of "some people in one city have jobs and nobody else does as a result" tech company as some others.
I disagree. You'd be correct IMHO if the welfare stopped if the worker quit his Uber or Walmart gig.
If a poor person has two income sources, either source is less essential than if he had just one of the sources. The less essential the pay from the Uber gig, the less Uber can squeeze the worker.
...wow, this is a really great case against welfare work requirements! You're basically just subsidizing the companies that pay their workers the least.
Without the work requirement, you're actually helping people.
No. Giving people money (or food) increases their negotiating power, which lets them ask for better wages from whoever else is paying them. Uber is especially weak to negotiation because you can just drive less or switch to Lyft.
You're actually arguing that welfare is bad - if giving people welfare allowed Uber to lower their wages that means people would be better off without it.