I think you may have swerved into the underlying answer. If making a reverse trike were easy, everyone would be doing it. No one is fencing off the genre. So why haven't others jumped into this pool? And why is it that those who have, have failed?
I think we need to give BRP some credit here. Though that doesn’t mean we let them off the hook for obvious shortcomings.
In reality, the Spyder has become much more reliable over the years. More gizmos yet fewer problems. When you add bells and whistles, things get complicated. Complication increases the opportunity for issues. If you go to any forum (including the Gold Wing version). You're going to find a great deal of complaints. That's because everyone posts their problems on forums. For good reason. That’s what we are here for! Once posted, everyone talks about them, giving negative subjects a lifespan. The shame is that this sometimes chases potential owners away. But I think our problem cure rate on the forum is quite high.
This is not to say that BRP's Spyder has achieved Honda level reliability. It bothers me greatly that BRP has cut corners here and there, creating unforced errors and shooting themselves in the foot. Their off ramp to Chinese batteries as just one example.
I’ve got a 2008 GS, a 2015 F3, a 2019 Ryker, and a 2020 RT. Overall, they have been quite reliable with a few minor exceptions.
I am a satisfied customer. In the end, that’s really what it’s all about.