Not everyone thinks it is desirable to have "big tech" companies. I see their existence as a failure to balance the market. Heck, as a swede I find Spotify too big, but they are a bunny compared to the big US tech companies.

It's analogous to the Twitter (RIP) vs Mastodon debate. Lots of people declaring that "Mastodon will never be the next Twitter" as if that was something to be desired.

Difference in worldview I suppose.

Should it be the task of the EU to enable creating big tech? Is that a positive thing for society?

Not to create, but at least not make it harder due to regulations/legislations.