There is only so much an appetite - and dollars - for all gambling so for a track to ignore being a leader in capturing as much of that spend isn't wise.
In Illinois, for example, there has been a long ugly battle with expanding gambling with VLTs (this is what NYRA had/has an invested chunk in with Aqueduct and fuels the track purses) - both Arlington Park [which is CDI] & Hawthorne wanted that business. Ignoring it loses the foot traffic that would be on-site and of course the $$.
The reality is the Illinois Governor hates the tracks and despite glad handing folks at the Arlington Million he's been adamant that if an expansion goes through these will be at non-race track sites.
If tracks aren't protecting and expanding their "turf" (no pun intended) it simply means they're looking at a small piece of the gambling pie.