My guess is that you're the one misunderstanding the math here.
At a 1% wealth tax, you will end up being 45% less wealthy in 40 years than you would be without the wealth tax.
There is a 100% cap on what the government can take from you. And, with a 1% wealth tax, they are taking 45% of it (spread over 40 years).
Put another way, the 1% wealth tax is similar to a 45% capital gains tax (where the cap is also 100%). Capital gains is just more front-loaded (paid upon liquidation) whereas wealth tax is paid over time.