whats up with yamaha and YZR-M1

i know this kinda stupid question but it was worth to ask someone if they know the answer it's ancient bike why yamaha doesn't build the next version like YZR-M2 or else
Submitted September 27, 2018 at 10:15AM by Kitysune https://www.reddit.com/r/motogp/comments/9jbado/whats_up_with_yamaha_and_yzrm1/?utm_source=ifttt