It's their market. No one is forcing you to participate.
On the regular 'market', you have plenty of options. You can sell to supermarkets, you can make a webshop, you can sell on a local market, etc. You could even directly sell goods from your own farm (which works in a lot of places). Similarly, a buyer can get most products from a lot of places.
If you make an smartphone app, you practically only have two markets: the Apple App Store and the Google Play Store. They can dictate outsized fees and draconic rules, because there is no other way to sell your product. Moreover, they can kill apps that they decide to compete with or pick winners. It is everything but a free market and the EU is right to regulate it with the DSA/DMA.
On the regular 'market', you have plenty of options. You can sell to supermarkets, you can make a webshop, you can sell on a local market, etc. You could even directly sell goods from your own farm (which works in a lot of places). Similarly, a buyer can get most products from a lot of places.
If you make an smartphone app, you practically only have two markets: the Apple App Store and the Google Play Store. They can dictate outsized fees and draconic rules, because there is no other way to sell your product. Moreover, they can kill apps that they decide to compete with or pick winners. It is everything but a free market and the EU is right to regulate it with the DSA/DMA.