I absolutely agree, but I am not sure that anyone was even considering this as a way to make money.

Unfortunately, for all the same reasons we cannot make money, we cannot get people to sign up for the site in the first place.

Two proposed solutions for this:

1) Something like I suggested before that matches people without them signing up somehow.

2) A bait and switch, where a site gets popular using the same tactics as other dating sites, and then switches to something better for them.

Neither of these solutions seem plausible to work at all.