I know charging $150 per hour labor rates seems like a lot, but most other motorcycle brands charge approximately the same amount based upon locale.
Most car dealerships charge about the same rates to be honest. It costs the same to do an oil change on my SUV, but it's about the same complexity - probably less as it's not a dry sump engine.
Given the complexity of the Spyder compared to other modern vehicles, I cannot see BRP dealers charging much less than other high end brands.
The equipment costs and licenses for dealer service departments, the increased service intervals of vehicles, the increased longevity of (most) vehicles, the manufacturer requirements for dealership standards and appearances, the increased cost of technician training, it all adds up. What used to be easy money for dealers in servicing revenue has fallen off per unit overall where their fixed costs have remained the same so the price per hour increases. BRP dealers may also not sell a lot of Spyders per year, but they still have to provide the facilities to fix them.
The Spyder is a complex and often not easy to work on machine. The more complex and sophisticated vehicles become, they more expensive they will be to repair when things go wrong. As emissions requirements increase, the more complex they become to extract the same performance as before. This complexity though is not just in hardware, but increasingly it is in software, which requires ever more complex tools and knowledge to diagnose problems. The user interfaces demand ever more technology behind the scenes to implement them. The Spyder with its stability control systems, power steering, integrated braking and ABS, semi automatic transmission and so forth, is already as complex as the some of the highest technology BMW or Ducati.
I guess it just amounts to when problems arise the cost of resolving these issues won't be cheap. Likewise, performing routine servicing isn't going to come in at the lower end of costs either. So far, my Spyder has cost me about as much per year as my BMW motorcycles that preceded it have done.