LOL... yes. This is the sticky area of protected files. Backup.
This is where the manufacturers themselves need to help the process along. I know that some audio card manufacturers have a way to key the software to the hardware, and have it have a unique identifier. I have a couple of UAD cards. Software I purchase for use on that CANNOT be cracked. It is keyed to my specific card. I can backup the software, and my key, but it simply does not run on anyone else's UAD card (until I deauthorize my card and authorize the new one, so two users cannot use the same software keys simultaneously).
I know putting a system in like this will not be easy for the manufacturers, but it is the only thing going to secure the future of the arranger, IMO.
After all, what is an arranger OTHER than content? Compared to a modern WS, a pretty poor cousin! Less than stellar sounds, less than stellar editing, and few modern features at all. But IT HAS GREAT STYLES!
But they are beginning to go down the path towards alienating themselves from any player 40 years old and younger, as more and more contemporary music gets ignored. I honestly feel that ONLY protected styles and secure delivery will save the arranger from ultimate obsolescence as fewer and fewer lovers of what they currently DO make styles in survive their NH years!
It won't be easy, but it has to be done, sooner rather than (too) later, IMO.
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An arranger is just a tool. What matters is what you build with it..!