perhaps you're right and he can go on for a while yet ......but the consequences of how he does that .....things are not good economcially in rusisa and the growth sector of the economy at present isn't earning russia anything because it's getting blown up iN Ukraine .....

we know he has been selling gold , I don't know how much , using the sovereign wealth funding and tgaxing his epople more
we in Oz compalin about 4.75% interest rate but the russian 15 % is something else and speaks about the true state of rusisas economy

How Putin Cannibalizes Russian Economy to Survive Personally

https://time.com/6291642/putin-cannibalizes-russian-economy/