Nobody is against regulation that disfavors large incumbents to support competition instead.
You'll struggle to find people who are against the Digital Markets Act for this reason. It literally only targets the potential monopolists.
However, virtually every other piece of regulation does the opposite.
Regulation usually gets trotted out after the downside of doing [new innovation] is experienced. This always happens, because doing something new always involves unknown risk. Most people aren't entrepreneurs and hate risk, so they pass regulation, and the market gets locked down so nothing new happens again. Incumbents and their army of lawyers can easily comply or are grandfathered in, and challengers are permanently disadvantaged. That market is officially dead until the next fundamental leap forward in technology.
What's different now though, is the hysteria over AI is leading regulators to pass this incumbent-cementing regulation before we've even had a chance to experience both the upside and downside, so the innovation never happens at all.
Combine this with a rapidly aging demography in Europe, and I only see this trend increasing. If there's one thing old people hate, it's risk and doing new things. Meanwhile, those same old folks are expecting massive payouts (social benefits) via taxation of the same private sector they're currently kneecapping with red tape. While ironic, those two trends converging aren't great for Europe.