It certainly didn't help that Standard has been sweaty balls for the majority of the last three years, while Grand Prix prices have continuously escalated for the privilege of playing shit games (not looking forward to having to pay for both the PPTQs and RPTQs next year as well, although I understand the logistics of it necessitate such).
Sales #s keep going up, but actual event engagement is probably down.
EDH has devoured most of the FNMs in our town, as the casual FNM-player-base sees a format that's (generally) cheaper, lets you keep your pet decks forever, and is more fun-oriented. Which most of stores seem fine with, since the folks who actually buy boosters at full price instead of just shopping for singles online, tend to be in that casual crowd.
I liked EDH while playing but didn't really explore that option since regular decks were already expensive enough and I wanted competitive play at that time. I remember the cheapest competitive decks were usually around several hundred dollars unless you went with a RDW variant. Is it still that expensive?