So when asked:
* #Zalando loves the #DMA but wants to repeal the #DSA.
* #Bookingcom loves the #Ecommerce Directive but [I missed what they want to repeal]
* #Idealo loves #antitrust but wants to "clean up the #cookie banner industrial complex" (while keeping #GDPR).
My verdict: Based on this legal panel (only), it appears Idealo might be the most ethical company of the three. :)

: Suchmaschine zu 465 Millionen Euro Schadenersatz verurteilt | heise online