The big monster here is Microsoft
Apple and to a degree even Google all since long adhere to open standards, but to add or remove calendar events data from a Microsoft platform (and I have't talked about the horror or other features like sharing, delegation and limited publication) requires - yes, you guessed it, money to license one of their idiotic and mostly broken standards, and woe betides anyone who reverse engineers it (as has happened before). Not only will that unleash a herd of sharks lawyers, but it also ensures that the next version will be "improved", which should be read as "tweaked just enough to make the competing product fail with errors" - or did you really think they changed thier approach that held back innovation back for decades?
The rest of the world uses caldav and frankly, any effort to improve or add features should land in that standard so that all but the shark pool benefit.
Dito for contacts, by the way. Carddav works, but could do with some framework features that allows identifiction of personal vs business data. If someone wishes to have their business data published so that every sales person can get to them and the occasional customer, that should not immediately expose personal details. Keeping that data away entirely is also (certainly at present) a good move, but why should the USER have to do all that protective work instead of the companies that want that data?
Sorry for digressing. Back on track: Open Standards matter. Anything else harms interoperability and should be banned from any enterprise on account of being in principle not that different from ransomware..
And yes, I just blew my rant quota for this week :).
Biting the hand that feeds IT
