Is the Guard Dead? Part 2

In grappling, where sweeps and submission attempts score points, it makes much more sense to play a very open game. There is very little downside to opening your guard, especially if you play a mobile game that’s hard to pass. MMA is totally different.
Is the Guard Dead? Part 1

I have seen Jiu-jitsu fighters lose on the ground, in positions where they should be dominating. I mean how many times have you seen a Jiu-jitsu fighter finally get his opponent to the ground, and then instead of scoring the win, get pounded into a bloody pulp? Way too often.