This is not an attempt to restrain the outflow of capital, it is made easier - a ban on foreign exchange transactions and that's it - you won't be able to take out much in suitcases, if at all you can take it out.
The problem is the collapse of the Russian economy. All these fakes of theirs that they fed the world with - the second most powerful army in the world, a stable and strong economy, the whole world depends on Russia, etc. nonsense, were on the air so massively and for a long time that they themselves believed in it. But the reality turned out to be much more deplorable - a backward resource economy, a primitive army, which, in fact, was stopped by the small and underarmed army of Ukraine, and not only stopped, but also forced to cowardly flee back to Russia and Belarus! And the economy without a currency - does not work in Russia - they are dependent on Western technologies in almost everything, and if they are sold, then only for currency - no one needs a fake ruble with a fake exchange rate. And you also need to feed and support the collapsing and losing army and security officials (the National Guard, the Ministry of Internal Affairs, the FSB) - otherwise who will protect the miserable likeness of the Kremlin Fuhrer from the people? In a year we will return to this issue, I'm sure everyone will already talk about Russia in the past tense