Lock em up, sell thier property. Rinse and repeat.

Works for small and medium-sized private companies. Doesn't work for major nations like Russia.

Doing as you suggest is like writing parking tickets for delivery trucks. They don't care. It's just a cost of doing business.

Why wouldn't it work? The oligarchs would certainly be a bit upset if they lost their yachts, mansions, sports teams, and everywhere else they keep their wealth away from Putin.