But if yesterday's kids weren't into Indy, why would today's adults be?
Because while Indy didn't have "kid support" back in the good ole days, the movie still did phenomenally well... I guess my point is, it's an apples and oranges situation with then and now. Then, kids drove ALL toy lines. Now, adults drive toy lines completely in some cases, and 50% in other cases, and not at all in some cases... A line like an IJ line could have fantastic adult support because people see it and say, "Hey, I love Indiana Jones, and I love toys, so I'll buy that", while kids may or may not jump on an IJ line...
But back in the 80's though, kids drove the line, kids were more into X line than IJ toys, and didn't back it... Now though, adults factor in and may drive the line for a time, while Hasbro just banks on kids becoming "hooked" to some extent. Or so the idea goes anyway. I got my IJ figures back then to accessorize my GI Joe figures, or give them a cool environment to play in... Now though, I'll be ecstatic to buy 3.75" Indy figures that are well accessorized and articulated... I'll support that. Then though, I only picked up things for the coat, the gun... usually on clearance/sale as I recall. It's the same reason I picked up SW figures in 1983/84. Han's coat and pistol went right to Airborne because I got Han for $.99 at Gold Circle and Airborne needed some cool **** to fight in the cold weather (namely a pistol and a nifty coat).
That's my theory though, based on really nothing more than I said... I wasn't into Indy figures as a kid, much more than for what they came with, but today I have incredibly fond memories of the films and anxiously would support a toy line for it, "just because". I guess the same reason I buy SW crap and keep getting this urge to buy 25th Anniversary GI Joes too... I look back on what I enjoyed as a kid and now I want toys of it, for some sick reason.