One of the major contraints on adding new users is SpaceX getting approval for and building new ground terminals in areas of high demand. I expect that balancing the load between ground terminals and bypassing congested cables will be a significant use-case for these laser links.
As such, I don't think it is the use of laser links that will determine the pricing of consumer maritime service when it comes.
I absolutely believe that commercial traffic will get priotized, but I highly doubt that maritime traffic will be capable of saturating an intersatelite connection that is designed to provide a backbone for land areas with higher levels of population density.
I'd happily pay a huge premium for a gyroscoped dish, that monthly cost tho....