Every EU company does not currently have to sell their products in every EU country. Neither does every American entertainment company.
The proposals, so far as I can tell, advocate a change in EU legislation such that digital goods cannot be sold to some EU countries and not others, or that EU consumers cannot be prevented from purchasing goods offered in another member state. Any such legislation will almost certainly apply to both EU and international companies. This is an idea that is very in-line with the single market goals of the EU, and I'm surprised that you seem to think otherwise.
In a similar manner, if you're a manufacturer and want to sell shoes a wholesaler in e.g. Germany, then you're not obligated to sell them in other countries but you are prohibited from mandating that they must be sold only in Germany - the wholesaler and their customers are free to re-distribute them in neighbouring Austria even if you don't want them to.