Yes but if the whole country goes through enough unnecesary hardship (Russians have a tough life) and his manupulative PR apparatus stops functioning he could start fearing for his life. Any of his thugs he’s surrounded by could at some point initiate a mutiny and eventually after failed attempts it could end his reign. Putin is bluffing big time too, he knows it. At the same time he achieved so much power and wealth that he may want to go for a different glory, he seems to want to revive a broken empire, broken in the sense that at some point Russia was looked up and now he’d need to coerce friends into an involuntary hug. Russia is so broken (not defending US, which is on the verge of catastastrophe too) that nobody wants to be their friend beside getting cheap gas. Cheap gas has been one thing to keep Russia from collapsing altogether though, it’s a bargaining chip but not really the best hand in the game