
You will never change my mind ...
That a [pigheaded refusal for anyone to promote an FOSS alternative to Outlook is a major factor in the lack of desktop Linux.
I don't need a load of battle hardened techies to "explain" to me how that doesn't matter to them.
They need to meet the average user in CorporateLand for whom "email" is Outlook and "Calendar" is Outlook (and whose "contacts" are Outlook).
The amount they actually do with it is immaterial.
The closest analogy I can think of is trying to persuade people who have grown up with sails onto a steamship. It's a fuck load easier to fit some dummy sails to keep them happy than it is to explain the principles involved.
Before that the same people who have needed wooden cladding in order to travel in an iron ship.
And so on.