As an russians who moved abroad I think sanctions positively affect Puttin so far. Because, he got a lot what he wanted but couldn't get without sanctions: - russian companies replaced majority of international companies. Many of IT companies growed 20-40% year by year - sanctions locked money inside of the country which help to build new everything - sanctions made boost of internal culture and patriotism. Which also increased popularity of government and reduced any alternative options.

And many more similar examples. Sanctions will hurt Russia in long term but not now. Because good sanctions requires to understand the country culture + execute only that hurt countries, which didn't do western countries.