lol, no, it's not. The reality is quite literally, statistically, the equivalent of
only you actually care about that. A mini with both a TV set and a flashlight on it is a gun hipster thing. And rarely, once in a blue moon, someone in LE wants it. Nobody at S&W, Glock, Kahr, or a bunch of other companies that don't do rails on little guns is losing sleep (or even a lot of sales) over not having a rail there. By this point even the TV set fad is eclipsing lights of any and all kinds by huge margins. I'm not even saying a light isn't valuable. No. I'm saying people largely don't care. Even at gun retail you get 10 times the amount of morons asking for a visible laser over a light.
At gun retail, NOBODY ever says "I want a tiny gun I can mount a flashlight on". Nobody does this. It's like someone going into McDonalds and saying "Can I have a cup of AIDS on the side with my Big Mac?"
Also, nobody ever says "I was going to buy X but theres no light rail, so I have eliminated it from consideration"
that basically never happens.
Like food for thought, I went on google images search and did like a dozen or so searches to find an RDS AND a light mounted on a regular Sig P365. I found a FEW pictures, but not metric tons of guns set up like that. Why? Most people that own them think its stupid- and they're going to upgrade to something larger if they actually wanted both. When I think of my circle of shooting buddies, I know a lot of guys with TV sets, and some with TV sets and Lights, and some with just lights. When these guys have attachments, they're on more normal sized handguns. If they are rocking a mini or sub type gun, there's usually not shit hanging off the gun- because it defeats the whole purpose of carrying the tiny gun.