Will it be possible? Yes. Will it be easy, or cheap? No.

As is often the case, embargoes don't make things impossible - but they do add friction. Longer lead times, "grey market partner" premiums. People who supply Russian companies with hardware get to pad their pockets - and while they have ties in Russia, for obvious reasons, they prefer to keep those padded pockets outside Russia itself.

It's even worse for bleeding edge in-demand extra-controlled hardware like modern AI systems.