I agree, but how will the employers be able to afford that? If they have to pay 7.65% on the whole million, that could kill many companies- the increase would be almost $67K per employee with the current max income for contribution at $147K, as of this year.
You seem to be missing the fact that people who are extremely wealthy don't make their money from ordinary income and SS doesn't receive anything from investment/estate/real estate/personal property transactions. Elon Musk has said (in comments to Elizabeth Warren) that he would be paying $11 Billion in taxes for 2021- how is that NOT enough? Nobody in the history of the World has EVER paid that much. OTOH, the wealthy don't need income from SS- why would they want to contribute a large amount and not collect it? It's not safe to assume they would do it out of the kindness of their collective hearts.
How many times has Musk gone to space? Zero. Bezos is a putz, but he came up with a way to get things to people for a low price, with a great return/shipping plan and easy replacements. Unfortunately, it has killed B&M businesses.