I think Starline seems to have a pattern of not leaning too far over their skis. When they are requested to produce a given cartridge, if they even offer a "we are considering producing these in the future," rather than saying, "we have no plans at this time to produce this cartridge," they'll have folks running around the internet talking about their plans to produce the cartridge in the future, and then be fielding calls from folks which heard online that "starline is going to start making that cartridge soon."
Similarly, I moonlighted as a bouncer at a bar during engineering school, and I gave the same advice to all of the girls which complained about "a bunch of losers constantly hitting on them and never getting the message that they weren't interested," - I'd tell these girls, don't offer any openings. If a guy sees any opening, he'll continue pursuit - so when these girls try to be polite and let guys down gently, naturally, the dudes wouldn't get the hint. But if they show a impregnable wall, refusing any openings, guys move on to easier targets.
Starline just doesn't show any openings, so guys stop hitting on them.