The point is to end the current system in which billionaires get all the privileges and financial benefits of owning assets in the U.S. but don’t pay taxes that are proportional to the benefits they extract.
As has been widely noted, the Republicans’ proposed “tax reform” is not only just more BAU (business as usual, i.e. cut taxes for the wealthy), it’s also not real reform. At best, it’s just another iteration of D.C. policy tweaks packaged for PR purposes as “reform.”
You want real tax reform? This is what real tax reform would look like: