Europe certainly has the means to support Ukraine financially, if the political will is there.
But it’s incapable of providing alternatives to Starlink, Patriot or ATACMs. Especially not at the scale required to make a difference in Ukraine. The withdrawal of these systems would be disastrous for Ukraine.
Especially if the US opens Starlink for Russia but closes it for Ukraine.
ATAMCs could be somewhat mitigated with heavily increased medium range drone production.
The game of shooting down everything Russia sends was always a losing game. At some point you have to start addressing the source of the attacks - i.e. strike hard at the Russian infrastructure.
Europe produces alternatives to Patriot (Aster). And ATACMS are not crucial in any way, these days it is Ukrainian produced long range drones that do the most damage behind the lines.
But it’s incapable of providing alternatives to Starlink, Patriot or ATACMs. Especially not at the scale required to make a difference in Ukraine. The withdrawal of these systems would be disastrous for Ukraine.