I am sure they would even if the fishery doesn't contain the "advertised fish" it can attract custom.
I was in a syndicate many years ago and the syndicate owner showed us photos of fish in there, we found out 2 months after we joined and had caught nothing bigger than 18lbs that the big fish had been sold off, fortunately my mate who has "a way with words" and our money was returned.
I know a better one than that .A fella advertised two irrigation reservoirs in Essex with this and that in. The punters flocked in opening night everyone blanked there were no fish in there at all and the fella had done a runner never to be seen again. I know of several waters that had major fish kills that were kept quiet so the money kept rolling in. It is a wicked world.