> Is Slack, Teams, or Trello not collaborative because it won't run on my XBox360?
This is not their point because your XBox360 is not something you use to perform your job (or, at least, it's not something most people use to perform their jobs). If I use a Windows computer for work and I can't use this software to collaborate on that work, then this isn't really "collaborative" software in the practical sense.
If something can be used for collaboration, it is be definition collaborative, is it not?
A multi-user tabletop projection system is collaborative, even if it requires everyone to be in the same room using the same device.
Is Slack, Teams, or Trello not collaborative because it won't run on my XBox360?