Don't force subscriptions! If everything I ran - occasionally - required a subscription, no matter how small, I would drop 99% of it. I have already done this for MS Office and Adobe Creative Suite. I don't need updates and certainly not their online "collaborative" features, which are pretty lame IMO.
Not sure how this works for them. A customer doesn't need services or updates but they disable their SW so, what, the user will come back to them. No, they just force us to find pay once alternatives or stop using the functionality. Because of this baffling practice I no longer consider their formats the standard.