If you look at some maritime disasters you will find in the reports that.------The new owner of the ship made modifications / added cabins and made the ship top heavy.-----So be careful of you start adding bits to change a boat.
On top of that in some areas the marina is a seasonal operation.----Hard / expensive to keep qualified mechanics on payroll in the off season.-----So yes the smaller dealer in a cottage / fishing area may have trouble repairing these high tech machines.
If the bulb goes flat you have and issue from bulb to the fuel tank.----Problem with tank venting.----Or issue inside fuel tank.---Or issue with anti siphon valve if there is one.
Respect and common courtesy are no longer taught by many parents.------No longer taught in schools.---It is against the law to set young folks straight wnen misbehaving.------Court system no longer punishes for bad behavior.
The concept will not change.-----Every day there are new boat owners who need to be taught.----Running a boat / motor is not the same as jumping in a car and pushing a button.-----Do not run an outboard dry !!!