Like it or not the Amiga is now a collectors item. One by one the serious users have moved on as the gap between current technology and Amiga technology gets bigger. Eventually the technology becomes an issue. It's a competitive world. What happens in 2009 when the US abandons NTSC for ATSC? Or the PAL world becomes the DVB-T world? How long will PAL and NTSC be supported before they drop them from the TVs all together?
I don't know about ASTC, but I've seen DVB-T and it is so much better than PAL that it won't be long before people switch once movies are available in it. In 2019 Amiga collectors will be competing with old TV collectors for equipment. It only gets worse as time goes by. Amiga 2000s towers with horribly slow PPC cards go for more money than computers that are 4 to 8 magnitudes of power more powerful. As the electronics become older the supply will contract, forcing prices further up. How much money is a collector willing to spend?
