It may be easy to find out why they are no longer a dealer. Did they have another brand and if so maybe could not sell enough to satisfy both. I have been told by two local dealers (neither Mahindra) they could not afford what it cost to open a Mahindra dealership.
Interesting enough, I went in yesterday to order filters and such. Parts guy said Mahindra dropped them because they are in actuality a New Holland dealer and Mahindra wanted them to carry more MA than NH stock. Well, we're a NH dealer, our sign says NH, not Mahindra.
When I bought mine, they had maybe I dunno, 4 MA tractors and probably 20 NH's on the lot. The MA's are cheaper, and people like me who aren't buying them to use in a commercial environment (ie getting paid to use it) are attracted to that.
In the end, it means they will no longer carry any MA stock (including parts, everything has to be ordered), any warranty work has to go to the nearest dealer, 60 miles away.
Sometime in the future, I may just order up a bunch of R&R items like filters, blades and things and have them on hand.