I don't believe that reloading is dying, as much as some of the competitive shooting sports are dying.
There are two things working against reloading today: the high start up cost, and the impatience of today's youth that demands immediate gratification (no offense intended towards the youthful shooters here). I am using most of the reloading equipment my father and I purchased back in the mid 70s, I haven't purchased anything but dies since maybe 1995.
Yes, I do load first for accuracy, and second for functional reliability. Because I do load my own, and I know what goes into making accurate ammo, I have never gone to the range to just "burn up" a few hundred rounds! Before my children squeeze the trigger, they will have to assemble the ammunition they will shoot under my supervision, so they can appreciate what they are shooting and not waste ammo. Patience is a demanding trait in the shooting sports!
Concerning reloading supplies, sources vary. The shop near me that use to supply the local trap and skeet shooters, and had the greatest variety of powders, closed its doors about 15 years ago, because insurance coverage went beyond skyrocketing ... from a few hundred dollars a year to over five thousand dollars a year. Aside from online purchases, I have four sources available: the Bass Pro (Atlantic City) sells powder and primers for about 30% more than Cabela's (Christiana), a semi local gun shop whose picture is in the dictionary with the term "price gouging", or my club's preferred gunsmith/member that does an occasional club order. When I was at Cabela's Christiana last night, they were stocking the shelves with 31 cases of powder, but there was nothing to be seen from Alliant. While bullet and powder selection were good at Cabela's, the primer supply was plentiful but limited. At Bass Pro, they won't carry OTM bullets, or hollow points, and powder and primers are (IMHO) way overpriced.
For me, I have to purchase my rifle bullets, but I am equipped and prepared to cast my own handgun bullets. I am currently able to reload: 12ga shotshells, 223, 243, 25-35, 270, 7mm Remington Magnum, 308, 30-06, 35 Remington, 40-65 Winchester, 45-70, 38 Special, 357 Magnum, 9mm Luger, 41 Magnum, and 45 ACP. For me, reloading won't die until I can't get components. If I had kept track of the cost of the above equipment, it would have been on the short side of a grand spent over 30 years. If I had to start from scratch today, I am afraid that this equipment would cost close to three grand. Many shooters today just don't have this kind of discretionary cash, and even the prices on eBay aren't very kind.