I'm going to concur with what MM said, and go one step further. Dash has a real development team who are doing real work to push forward a real change in the usability and decentralization of cryptocurrency (Dash Evolution). For our dev team, it's a matter of priorities. Sure, they could code the 2 MB blocks and spend a few weeks shepherding us through the fork, but why do so when we don't need to? Unlike some coins, who have to adopt tech that they don't need just to get some good press, Dash continues to develop real features that will take us to the top...in the long run.

Yes, if we had implemented 2 MB blocks that same month, we probably would have gotten a little price pump from it. Yes, if we had been the first coin to implement SegWit, we probably would have gotten a little price pump from it. The difference between us and other coins is that when we don't need things, we don't implement them just to get some temporary media attention and price action. From my interactions with the team, they work just as hard today as they did when Dash was $4, and will work just as hard when Dash is $500.

You want short term profits? Find coins that implement features that are unneeded just to get a pump. You want long-term value? You'll find it in Dash.