On another note, I wonder if Mark would ever sell his back catalogue? Not sure why he would want to.
I'm assuming that none of us here are experts in this stuff (I'm certainly not), but there may be benefits in tax, estate planning etc, also probably just less hassle, someone driving up to your house with a dumper truck full of cash, rather than running a company that deals with the dribs and drabs every year.
Honestly, I think it makes sense... I can't imagine the "Knopfler estate" keeping rights to everything, maybe until MK falls over? Maybe he could sell just the Dire Straits catalog?
If Springsteen, Simon, Sting, Pink Floyd and even Dylan himself sell the rights, and these are one of the biggest and wealthiest "legacy" songwriters, it's the question of time.