Shimano also plan ahead. I saw the plans for 14-speed cassettes more than 10 years ago.
As someone who builds bikes, the biggest problem with MTBs is the lack of compatibility. If I build a touring bike with 1 1/8″ headset, 135mm rear spacing and 68mm threaded BB, it’ll be fine for decades. Most of the folding bikes, recumbents and other things I do stick to those same basic standards.
But MTB is getting silly. Loads of different headset standards, loads of different BB standards, loads of different rear axle spacings and dropout standards. I built a lovely fatbike frame before Christmas, but will headsets and BBs still be available for it in 5-10 years? It’s already obsolete really as it has a 135mm offset rear hub.
Innovation is good, but when it means perfectly good bikes become obsolete very, very quickly it probably puts a lot of people off.