this is also ignoring all of the critical software that is windows-only (e.g. quickbooks, solidworks, bespoke programs in banks and government).
point is: microsoft is not in "significant danger" today.
And Canadian banks aren't known for moving fast. They are pretty conservative (at least the big chartered banks are).
user management, file management, security, windows-specific software, auditing requirements, required capital investment, lack of competent linux sysadmins compared to windows sysadmins, and so on.
i would love to see your numbers for this. what does "increasing percentage" mean? 1% -> 2%? 10% -> 20%?
i teach at a college level, in tech, and would estimate ~5% of incoming students have any experience with something other than windows on a pc, at best. outside of tech, i would estimate ~2%.