Next five years.......dunno about "downloads", but digital files for sure. Hopefully high-res 24/192 or 32/384 if we're lucky (but I doubt it).
As for how I acquire those files, that remains to be seen. Downloads are great, but as resolution goes upwards I don't think the speed of the internet will keep up - that may be more of an issue for me than those in the US.
For me today - downloading a 24/192 FLAC is prohibitive. Other means will be required - such as USB memory or optical disc.
That said - as any music is now - they will be immediately transferred to my music server, so I want a file that is easy and transparent to transfer to any place I see fit. For now, that is the Squeezebox Server.