Not entirely true, at the Afsluitdijk we resisted the entire time, and the Bombardment of Rotterdam was to force the issue, Germany threatened to do the same to Amsterdam, Den Haag, Utrecht (probably, it's been 25+ years ago I learned this in VWO) and pretty much every other single big city. The Dutch leadership just had less grit than the Ukrainians. Would the Netherlands have lost? Yes, probably, but don't forget we still used the Waterlinie, if Germany didn't have planes they would not likely have been able to pass that easily. Fortress Holland might have stood long enough for some form of reinforcements to come. (Unlikely, but hey, one can dream, right?)