Good, fun question!
I have to think electronics are going to be heavily involved in our MTBs in 10 years, for better or worse. IMO racing will never go out of style because it’s a rider vs a clock. no judges, no hype, you win or you don’t…the purest form of mtb competition. i’m curious about the popularity factor, too. it seems like BMX (and sports like skateboarding etc) are struggling b/c youth would rather spend $500 on a phone than a bike. maybe as they get older, they’ll get turned on to MTB or maybe they’ll just do virtual reality MTB and call it good? i hope flat tires are extinct by then.
edit: can’t forget e-bikes in the equation somehow