Yep, a 5-seat personal Office 365 license is $100/year, and academia loves Google's online counterparts which are totally free. My wife who's a PhD also gets a free Adobe CS institute-wide. Very hard to compete with all that.
Overall, when I was doing a data model chart for my current company, I researched good options for doing that in a collaborative manner, and all of them are subscription-based now, which doesn't make sense for making a diagram or two when draw.io is available.
Overall, when I was doing a data model chart for my current company, I researched good options for doing that in a collaborative manner, and all of them are subscription-based now, which doesn't make sense for making a diagram or two when draw.io is available.