The important questions is, however, who's setting the prices for the drugs & procedures. I imagine it's the same in NL as in most Europe - the procedures covered by (obligatory) insurance is set by a centralized agency (probably government), along with the costs of said procedures and the drugs that can be prescribed as part of the insured procedures.
IIRC in the US, the main problem is that those setting the prices have much more bargaining power than the insurers (especially the smaller ones), so they're pretty much free to raise prices...