Online Gambling is a great thing for land based casinos in the same way that VCR’s and renting movies enhanced the movie industry.
More exposure. Creates demand where there wasn’t demand before.
Even if some people choose not to visit a land casino on their vacations because they’re getting their gambling fix online, that loss will be more than offset by the influx of new gamblers that, having wet their appetites online, will be flocking to try out land casinos.
Unfortunately, some who are involved with land-based casinos are being short sighted. Can’t see the forest for the trees.