If it happens, who would buy it? Amazon, M$? Much good that would do, just shift power from one giant to the next. Maybe if IBM bought it and ran it to the ground after a few years…

No they start preschool from 1yr old if the parents want, but it is compulsory to enroll at 6. The year for six year olds is also a bit different from the first years with more focus on familiarising with school routines and learning - but still lots of play