From the other side (vendor perspective) we see this SaaS fatigue a lot. We have a free, open source, unlimited use product that has a very good, commercial, alternative. What we hear in calls is that there are just too many SaaS tools in the company and the monthly cost (or security review of all tools) ends up with the management saying "pick your top 5,10,15 most important" and drop the rest. The GSuites, Slacks,…
As an aside, draw.io (now diagrams.net I see, why the change?) is a nice tight project. I was an early adopter (i.e. from beta releases) of lucidchart and really liked their first few years; convinced two companies to get a bunch of licenses. Over time they've become a hot mess of bad patterns in SAAS and I won't touch them for a few years now (and let a license for ~100 people expire). Congrats on keeping things sim…
Basically they're dropping the .io domain for security and ethical concerns, and the old name being the full domain is probably why that leads to a full rebrand