I think the problem is that outdated competition laws stem from an era where a potato is a potato and it doesn't particularly matter whose potato it is that you buy.

It completely fails to account for the relatively recent platform lock-in and network effects which dramatically amplify the leverage and impact of the platform owner not only on the end users (who could with great effort choose a different platform and migrate all their data and services) but also the third parties who need access to the platform in order to enter a market.

I think concepts behind the laws are fine. Courts just don't want to apply them, instead diluting the original idea.