@fruitygreen I understand your 'fad' perspective, but there is one difference. The onewheel requires plenty of skill to ride.
Why has the longboard stuck around? It's a skill oriented sport. Lots of reasons but that's a big one.
I perform many jumps and tricks on my onewheel which a longboard isn't capable of. I believe with enough work it can be lighter and easier to carry.
The onewheel concept is a lot different than the hoverboard concept. If onewheel gets on their feet (like their competition boosted), then they can really push their product further.
If anyone has done 1800 miles on a hoverboard let me know, but i don't see myself loosing interest in my board as it is a way to improve skill
I agree with the skill level required to use and advance with the OneWheel.
Longboard may exist today , probably due to price factor (if we are talking about the non-motorized ones).
So we are still talking about whos buying OW and how many?
You may be a ripper who can afford it OW, but not all rippers can afford a OW.
Your interest might still be there 20 years from now, but will there be new interest in 5 years to keep OW production going?
Basic economics apply today and the future.
OneWheel need to diversify in products (footpads and other creative products) to sustain their growth.
I am sure competitors of FM or OW are keenly looking forward to getting a piece of the pie.