If the interest is there, people will find the time. Even working 12 hours a day, every day of the week, and taking a full 8 hours for sleep, that still only adds up to 140 hours. What are your Turkish people doing for the other 28 hours? How much do you want to bet that it's entertainment?
True, it's easy to fit in a bit of extra time. For example, when learning Kanji it's easiest to keep coming back to them and familiarising yourself with them at regular intervals. Even if it's during a short break while watching tv, or before you go to bed, it's definitely possible.