The democrats can never seem to manage to tax the wealthy (themselves effectively) when push comes to shove. I'm not trying to be partisan, Republicans similarly are unable to cut spending. Perhaps this time will be different but I'm betting against that personally.

Also it is my belief that moving money from investment vehicles to consumers will have a inflationary effect on consumer goods. The slow trickle of subsidized Uber rides for example probably has less of an effect than a direct cash transfer that happens more rapidly. More so much of that money is invested internationally, by increasing taxes on the wealthy we may be in effect increasing the total money supply in the United States.