Everyone starts a company with the idea it may never apply to them, so why worry about it before it becomes a problem.

Of course, with the leaving tax, they may just move abroad before doing anything.

It was not that it didn't apply to me. I've had shareholdings in Norwegian companies worth well over the deductible several times. The point is that it isn't a problem in practice as long as you're aware of it and plan accordingly. Yes, if you start a company in Norway without a liquid market for your shares, and without understanding the tax implications, you might end up having a bad time of it. If you spend an hour talking to an accountant beforehand, it's just a minor extra cost of doing business.

E.g. at a $10m valuation you'll end up paying <$90k wealth tax after rebates. If your company is valued enough that your shares are worth $10m, you can finance a $90k loan either directly or via your company, and bake it into your funding rounds. Yes, it's an extra drag on your business, but from first-hand experience, preparing for this just isn't a big deal in most instances.

You don't have to like it, and people are free to whine about it, but in reality it's a problem only if you don't know what you're doing.