They already got a taste of this with the logistics backend for the F35[1], but NGAD explicitly said, "we're not doing that shit again", so LM is angling for another way to get those systems locked in. It's gonna be a grappling content for sure, but as long as the DoD doesn't want to pay for things like frickin prototypes then LM's gonna keep angling for ways to make cash on the support end.

[1] Which was a mess. I mean, even in an industry notorious for messes, it stood out, by a lot. I can think of one other program I've seen that gave the 35 LSA/MTA/ILS/ERP/DOA/InsertYourFavoriteMeaninglessAcronym a run for its money.