It will take decades if ever to replace the trade the west did with them. All those luxury cars and designer goods will only be available as knock offs from China.
I hate to point it out, but whatever the long term result in Ukraine, the Russian sanctions will not be in force in a decade, they would be lucky to still be in force in half a decade. Western governments/companies don't have much stomach for doing such things, hence why they watched Putin spend months organising an invasion of Ukraine, then delay it, then wait, then finally invade and all the time western governments did nothing to try and stop it aside from talk, then finally came in late with sanctions. The only reason western governments care about anything is because their voters happen to care about it at the time.
To put it into perspective, back in 2008 the US banking sector created a financial crisis that crippled their economy and sent shockwaves throughout the world, people were livid, millions lost their jobs/homes and when all was said and done, their government then used taxpayers funds to bail out the financial institutions who then used the money to pay themselves big bonuses and blame everything on poor people and immigrants, people got even more livid. But a couple of years later hardly anyone in the US really cared about it anymore because it was old news, that was their own economy and you think they're going to care enough about Ukraine in 5-10 years to make their government care?
And it's not just the Americans who lose interest, when did you last hear people talk about the Syrian civil war or see it on the news? How's Assad doing against ISIS and the western backed rebels? How's Libya doing right now? Last I heard it looked like it was gonna be the leading warlord versus Gaddafi's son in the run off for the presidency (that's not a joke in case anyone not up to date with Libya is wondering).
The west does not care about conflicts long term, prior to February Russia had been militarily occupying an area of Ukraine bigger than Wales since 2014 but nobody cared anymore, when I dared to suggest on here a week before the invasion that the west should start imposing sanctions in response to Putin preparing to invade a peaceful neighbour I got laughed down. Putin believes if he can keep things going until winter then the amount the west cares will once again decrease drastically, and the sad thing is he isn't wrong, Ukraine are in a race not just against Russia but against winter and eventually the time limit before the west tire of supporting a just war and become more interested in supporting a bad peace.