No, not really. There are not enough super rich and anyways the super rich are extremely mobile and have huge flexibility in how they can manage their affairs to minimise their taxes. If taxation becomes too penal, they bugger off, leaving those of us on moderate incomes left behind having to pay even more.
From CNN: “The continuing exodus from the UK — 16,500 millionaires left between 2017 and 2023 — is part of a global mass migration of the rich that appears to be accelerating. The Henley Private Wealth Migration report found that 128,000 millionaires are set to relocate this year, beating last year’s record by 8,000.”
“Of the 15 places with most resident millionaires, the UK is suffering more than most — only China will lose more HNWIs (15,200) in 2024”