At some point Arianespace have to realize they're wrong. SpaceX has been reusing the same hardware 10 times or more. They have a flawless success record in recent years, despite the reuse. Wouldn't you say that straight up defies that argument?

And regarding subsidies, sure, SpaceX has received government contracts. So has Arianespace. https://arstechnica.com/science/2019/02/spacex-to-european-competitors-were-not-subsidized-you-are/

At the end of the day it simply doesn't matter: SpaceX is able to offer the same service at a fraction of the cost. I'm a capitalistic world order, that will always result in one company succeeding, while the other goes bankrupt. The only reason Arianespace still exists is that Europe needs independent access to space and is willing to pay for that. Not because they're successfully selling a ton of launches to other countries.

Just to cement this point, Ariane V launched less than 5 times in 2022. Falcon 9 more than 60 times.