It's actually quite logical, if you agree with their assumptions:
1) The increased availability of digital music will lead to an increase in piracy, and
2) An increase in piracy will lead to less money being spent on recorded music.
(Both those assumptions can be argued, but the music industry believes them to be true).
Given that, the following argument is logical:
1) At some point in the future the money being spent on recorded music will decrease to a point where it is not a significant source of income.
2) The longer that point can be delayed, the more money can be made from recorded music in aggregate.
3) Anything that makes digital music inconvenient for the consumer will delay the collapse of buying recorded music because it will reduce uptake (!!)
4) Therefor, fight anything that makes digital music better/easier to use.
5) Meanwhile, try and develop new sources of income (360 deals, streaming licencing, game licences etc)
From their point of view it's not bad business at all - it's the safest course of action.