On Europe the 860MHz band is subject to more restrictive transmission duty cycles, LBT or FHSS.

https://en.wikipedia.org/wiki/Short-range_device#SRD860

In the US you also have the FCC reshaping the 900 MHz for industrial broadband and NextNav. So there will be more competition.

https://www.nemko.com/blog/fcc-reshapes-the-900-mhz-band-for...

https://www.landisgyr.com/br/pt/home/knowledge/blog/Navigati...