I see the French as the losers in this deal, Russia has the designs for Mistral, it now has the knowhow to build a vessle of this type, and the French paid them for the privilage. France now looks weak, they were bullied by the Americans and the Baltic States into reneging on the deal, it makes them an untrustworthy supplier.
I wouldn't necessarily agree it was purely the US that pressured Hollande, the entire EU and NATO community was opposed to deliver and agreed on Sanctions since the invasion and annexation of Crimea
As for the tech, yes they now posses drawing, spec, etc, but give the the state of Military shipyards in Russia it would be very challenging to actually complete any build of this capacity.
And this is all in the context of the current economic situation Russia faces which would make it another challenge to fund the program