Digital music grows … despite P2P

2005 was a record year for digital music. At the same time P2P use continues to grow.
Christmas was a fabulous week. 20 million Tracks were sold in the last week of the year, three times the previous year. This is compared to P2P where 250 songs are downloaded in a week.
Accordingly to the article: "If the market can retain volume gain as it did last year, the numbers are tantalizing. Last year, sales fell by about 20% in the weeks following New Year's; such a drop this year would yield a weekly volume baseline close to 16 million tracks. That would put the download market on pace for sales of 750 million to 1 billion tracks in 2006."
Good news for a start. But any reason why this happened? It is very ironic though. I should guess there is still a big diffrence between owning a cd and installing music in P2P.