I live in Switzerland. It's an excellent example of a place without a capital gains tax, because it doesn't have one. I didn't say it doesn't have other taxes!
The type of tax matters a lot. The reason capital gains taxes are bad is that they discourage investment, but investment is how you create wealth. "Creating wealth" is ultimately a synonym for creating material progress. Voters like progress, and so this is a very simple and direct argument, which is why most countries that have capital gains tax it at a lower rate than income. Wealth taxes have different incidence and change incentives in different ways. Basically, they discourage having wealth rather than creating it.
It can create its own problems. Switzerland has had big problems in the past with the wealth tax discouraging the creation of tech startups. The reason is that if you create a company then sell some equity in it to investors, that creates a valuation of your company which is then considered wealth, even though it's theoretical wealth and not liquid. In other words, doing a big VC raise can land the company founders with an unpayably massive tax bill: they literally don't have the money to send the government because it's only paper wealth.
To fix that the Swiss tax authorities had to introduce a new rule that says if you have ownership of a startup, this doesn't count towards the wealth tax. What exactly is a "startup" and what differentiates it from other kinds of business? Whether it is "innovative". What counts as innovative? The taxman decides. That means creating a startup in Switzerland is quite risky as if some random bureaucrat decides your product isn't truly innovative and you do a big VC raise you could be personally bankrupted (or you have to use some of the investors money to pay yourself out each year, which is then taxed as income too pushing you into a much higher tax bracket, etc). There are lots of other practical problems with the wealth tax.
Tax incidence is complicated!
In practice the Swiss approach works because:
- The wealth tax is quite low
- This "innovative startup" hack seems to work out in practice even if it's concerning in theory (tech startups aren't the only way to create a lot of wealth)
- Wealth taxes discourage all kinds of wealth equally, so the effects are diffuse and they don't specifically discourage e.g. getting promoted over company formation over inheritances, which is a distortion a lot of other approaches do create.