Yes starship will open up a lot of opportunities, however the market is not large enough unless spaceX creates it themselves.

Falcon 9 already launches more than 50% of all Payload sent to orbit today.

They will have the launch airline or cargo service company too not just build starship and get regulatory approvals, promote, sell tickets/capacity and provide customer service etc.

All risky steps in a possible side use case for the starship program. Realistically none of this happening before mars missions start likely 2030s.