These were my initial thoughts as to why this has potential:
1) Maryland has now legalized slots. But, can find no one willing to invest in either the License fee or the infrastructure (machines, real estate). This shows a propensity to tolerate and approve gambling initiatives...and perhaps find a less expensive business model.
2) The horse tracks are dying. I was in the parking lot at a Maryland track on a Friday night in March. It had a capacity for thousands of cars. Only 18 were in the lot. The legislature will try to take measures to save them and table games are the answer they are suggesting.
3) W.Va, Del., and PA, are surrounding MD with table games...You gotta know the senators are thinking....if ya can't beat 'em, join 'em!
4) Table games attract a more intelligent gambler...along with the dollars that accompany them.
5) The Gaylord Hotel Complex looks like the Bellagio, and cost as much...Hmmmm
6) Maryland needs the Revenue like never before.(See 3) Do I really need to say the "R" word?
Thunder, I think you are referring to the charity gambling that was abolished in the 90's. That was due to corruption. (please see link) You should know from history corruption won't stop vice...it will only delay it's development. Ask Howard Hughes, he'll tell ya.
http://articles.baltimoresun.com/1996-08-23/news/1996236148_1_charity-gambling-casinos-glendening