Let's not make it some sort of agenda out the EU: these companies are out just for themselves and however much someone likes their tech/philosophy/ecosystem, their practices are bullshit and unfair.
I know it might be not be an obvious difference for people living in US these days, but there's in fact a massive difference between a megacorporation and elected government.
We vote for the parliament, which was only like a week ago. Each country also votes for their government, at times specified by their constitutions. Those governments then form the Commission and the Council.
One is a for-profit company known for anti-competitive and cut-throat techniques, as well as expert in tax dodging over the world.
The other is a governmental group formed by 27 rather different countries, all having a wide range of philosophies, cultures, corruption and mentalities.
I know which one I am more likely to get some level-headed decision which might help me.
The EU at the cutting edge of competition law, which is to say it is looking actively at the competitive landscape and saying "what are the problems?" then moving doctrine along to solve them. There's a lot to be said for the approach.
If the EU can be said to have an agenda, it is clear from the rules - their agenda is market fairness, and the ability of new entrants to successfully compete. The DMA is a key plank of that, but there will be others.