As an extract goes, it may also be intended to be used to supplement the AG beers that might fail to reach the intended gravity (i.e., as a quick fix to prevent discouraged first time AG brewers from tossing a batch for that reason) and for making starters and for dialing up to an Imperial level, if a mash tun is maxed out.
I always tell guys that are jumping to AG to keep some DME on hand for these very reasons. Once they get their system dialed in, they can use it for starters or toss it in a batch to use it up or to add to a wort boil to get a recipe up to imperial status if their mash tun is limited.