That this would be a huge administrative burden and or a major shift for the first year is not a strong enough argument to not do anything. After having lived and paid taxes in both Norway and France, once you get over the initial shift and start to make a change, alternate systems of taxation do exist and can be implemented. I bring up Norway and France because the government sends you a pre-filled tax form. They have your income and, in the case of Norway, an estimate of your taxable wealth. Very similar to a property assessor, you can either accept the numbers as estimated and available from public records, or you can fight and maybe get a little relief, but it would be impossible for Bezos, Musk, etc. to pay zero tax in Norway...
There are different ways to solve this problem, but there are also examples and frameworks out there to start from. Otherwise I do believe the direction America is headed is unsustainable even for another decade. We will start to run up against having to make painful cuts to government spending and lowering the quality of life for 99% of the population, including all of the service industry - that just isn't going to go over well for long... If it doesn't result in instability, then, at best, we will have a country that looks more like the Philippines or the Middle East - people looking abroad for work that actually pays a living wage and or subjugated domestic workers, and the wealthy handful that can afford to live in compounds and travel abroad, all while protecting their wealth and status against the powerless majority...
I know both of these outcomes (pre-filled tax forms and subjugation of service workers) sound alien and unacceptable to most Americans, but if we cannot find ways to address our problems democratically and make our lifestyle sustainable, then we are going to have to accept changes forced upon us. And as it currently stands, the wealthy will get to decide what those changes look like.