Yes, to the point that learning Dutch on the fly is hard because nobody will try to speak it with you when they are so good with English.
People often explain it as kindness, but it's really just plain rude laziness: for many Dutch people, speaking slow and clear Dutch requires a lot more energy than upspeed English. Let alone listening to and trying to understand broken Dutch.
Though funnily enough I will (during the summer) quite often get addressed in German when I enter a shop, at which point I haven't even said anything yet nor do I speak German.
If you want people to take the time and trouble to speak Dutch, consider asking them, preferably in a context without time constraints.
edit: oh Skrebbel, I see now it's you and I know you're Dutch. Point still stands though :)