And there is only one possible outcome: Apple will bend to the EU's will, because in the end the European market is too profitable to ignore.
The commission knows they really don't have much to stand on, if they go any farther they know other EU countries are going to step in again (these rules are not very popular anymore after GDPR and now that the EU is falling even farther behind the USA economically).
The EU commission is a lot less powerful than a lot of terminally online Americans like to believe. EU courts constantly rule against them for overstepping their bounds and they have been caught submitting fake evidence before (see: Qualcomm case)
Right, Far-right and EU-sceptic parties are predicted to become much stronger.
So their stance might change on some topics
The european far right are hardly fans of large American tech companies
now, if they were domestic, that would be entirely different
Those parties are running predominantly on nationalism and populism. If anything they will be happy to screw US tech companies even more.
Do they have a much more favorable attitude towards American tech giants than whoever is in power now?
No law like the DMA passes without the approval of parliament and the council of member states. In fact, all the details are hashed out between these two bodies with little to no say from the commission.
BTW: The way the commission is selected is one step removed from the voters but this principle is not too uncommon in European parliamentary democracies. For example the German or Austrian Chancellors or the prime ministers of Italy ,Spain, Sweden, Denmark, Poland are elected in a similar fashion.