Perhaps not. But you could still imagine a for-profit matchmaking service that would do a better job of aligning its interests with those of its clients. For example, it could collect only a small fee upfront with an agreement that if you meet Mr. or Ms. Right you'll release a larger fee held in escrow.

I imagine that would need to be quite personalized and high touch, but it would be an appealing contrast to standard dating sites, which have interests diametrically opposed to those of their users: a user who makes a long-term match will stop paying the membership fee, so the site owner has no real incentive to help the user do anything but churn.