As I’ve argued in the past, Urban Gondolas and Cable Propelled Transit (CPT) are not niche technologies.
Sure, cable can be used in niche settings, but the sheer variety of settings and environments cable can be adapted to prevents it from being a niche technology.
A technology that can adapt to dozens of niche settings is not a niche technology, it’s a flexible technology. And while on the surface that appears to be a quality, it might just works against the technology.
Something that is flexible, after all, is often also confusing. And confusion gets in the way of sales.