I know a lot of founders whose companies are allegedly worth a lot on paper, but cash on hand is very limited. I wonder how the wealth tax actually works. Do I

I know a lot of founders whose companies are allegedly worth a lot on paper, but cash on hand is very limited. I wonder how the wealth tax actually works. Do I want people to invest in my company if that's just going to increase the valuation and my tax bill? Surely there must be some exceptions...