I'd wager this wasn't a conscious or willfully planned consequence of the acquisition and Apple will resolve the issue.
Oh, puh-leez. Apple knows exactly what it is doing. They do not look at companies and buy them up, quickly "in a flash". It is
not as if they shopped in a candy store. Buying a company involves lots of heads, lots of consideration, weighing pros/cons and making a case why they should do it, and approval from bosses/managers.
They know how many lights will go out, when they "bag" a company. They did not just buy a dorm room programmer with zero customers: they bought an established company with customers depending/relying upon their technology/I.P.
It makes no difference to Apple, that one consumer happens to use subject proprietary technology to develop an assistive/enabling product.
If true...very shortsighted decision...and OUCH for those depending on the software.
Actualy, if indeed true...apple may very well be in for some fire and brimstone...and rightfully so.
The masses will not care today, and this crowd will largely forgot about it, "tomorrow". It is a
little deal. Just a normal business day.
Maybe it was an oversight
Apple is not new to buying companies, they did not "just start yesterday".
Does anyone here remember FingerWorks? FingerWorks made assistive/accessibility/enablement devices. Keyboard substitutes. Apple bought FingerWorks, bought their patents and their brains, and took a physical device off of the market. That annoys me more, than taking-over a software-only company. There is lots of other machine vision development around world, in academic, commercial, private, and public (libre) realms. FingerWorks's capacitive multi-touch products were one of a kind.
Apple doesn't care much about accessibility here in some areas.
Sure shooting. Sticky Keys option 'Display pressed keys on screen' was broken in Mac OS X 10.8 10.9 and 10.10.
Apple's non-written policy is to support latest three versions of OS X. The fourth-newest one is not supported, will have major security bugs. When a feature breaks in a new Mac OS, general advise is "keep using the older OS if it still works" and
hope said feature gets fixed (whether in an update, or not until next entire OS release). Apple skipped three versions of Mac OS before fixing the problem. Since 10.10 Yosemite until 10.11 El Capitan, there was no maintained/supported Mac OS with reliable Sticky Keys on-screen display.
edit add:
Big "Like" to you, LordVic. I did not see your post until after I finished composing mine.