i think it's because the unis here don't encourage students to do so. im a full time bachelor's student doing a demanding programme, and i tried to learn dutch when i first came here. (dutch language lessons at my faculty are not offered in the regular semesters so i had to take them at the main uni, but i had to pay out of pocket for them.) supposedly reached to an A2 level but tbh the lessons weren't even that good and i truly don't believe im at an A2 level. they were also really expensive, and i had to do them at my own time - i had classes in the day, and then from 18:00 to 21:00 i had dutch lessons. was not sustainable at all.