@Breffni-Potter said:
That expensive audio interface you bought a few years ago? May not run on El Capitan.
So for studios, video production and other areas, this could be a crippling blow to Apple's creative segment.
This will have very little effect on studios, That will only be an issue for Home users and consumers.
Studios and video production houses run very much differently than a normal business do to deadlines and most user will need to solve their own problems as quick as possible to stick to deadlines.
Almost all studio environments are an isolated network from the internet for their creative work. They only thing on the network is the computer and some super-fast file storage and maybe a render farm depending on the size of the company. They will run the version of the OSes that the hardware they are using for that studio recommends, which I can assure you is not EL Captian. The standards for audio/video haven't changed in a very long time (HD standards came back in 1980s) so unless you have a good reason to upgrade for workflow, new features, or something breaks there isn't as much of a reason to. The creative world also tends to be a place where all artists etc will get full admin rights locally (again because of the critical deadlines with the nature of the industry) and, because this is all isolated, not dealing with any sensative data that's not really a bad practice for them(administrative people are on seperate networks without admin rights)