This is Putin's last opportunity to hang on to the old Russia and he knows it. He will not live forever. Riding horses bare-chested in cold rivers will not turn back the ageing process.
The problem with dictators seizing back control is they create a vacuum behind them.
In a new world order, where China comes to equal the US in financial strength, Russia's long term future lies with Europe as does ours (UK). There is no natural cultural symbiosis between Russia and China. It will take some brave people to come forward and manoeuvre Russia's political will back into Europe, but younger generations will take it there eventually.
The amount of Russian money that has been invested into London real estate (and into French property also) is staggering. This is not all owned by oligarchs close to Putin. Nobody knows the full extent because it mostly comes through layers of offshore trusts and companies in the Caribbean, Mediterranean and Switzerland. There is little sanction that will be brought against real estate, because in practice it does not have the immediacy that blocking $100m in a deposit account does. There will be little appetite to block personal funds for the reason that it alienates those who may hold different views to Putin, who may want a different political system in Russia and who may be the only ones capable of funding that change when his time is up.