This. It is truly amazing how many in this thread have 0 clue about MS products. I guess GSuite is amazing if you are a 2 person company. Everything above that is on the Office 365 train.
Disclosure: I used to work on Google Cloud (but never on Workspaces née GSuite itself).
There are plenty of companies with tens of thousands of employees using GSuite [1]. Also various governments, agencies, regulated industries and so on.
A few years ago, GSuite added improvements to Office importing (primarily Excel and PPT, IIRC) that assuaged a lot of folks. Companies still might have departments using Office (e.g., Legal still using Word for its redlining or Finance using Excel) but because you can shove them all in Drive or import them into the GSuite equivalent, most of the company happily uses GSuite for everything else.
I've worked in 3 companies with the classic Silicon Valley starter pack consisting of Slack, GitHub (not part of Office 365), and GSuite, and found it overall pretty good! What features did you find missing? Personally I shudder at the thought of using SharePoint, it's the worst designed product I've seen.
I wonder what was so wrong with Skype that many abandoned it? Now, i've been told that the enterprise variety is a different product that's way worse, but i use the regular Skype occasionally and it's okay.
Personally, i think that it was best before its many redesigns (e.g. the versions that you could get from sites like http://www.oldversion.com/windows/skype/ at least when they worked), but even nowadays it remains usable and does most of what i'd like for the basic use cases from a chat application, or even for video calls or group calls.
Then again, in my eyes many of these platforms are just reinventions of IRC in some capacity, with the occasional nice feature (e.g. Slack/Discord/... having threads, deep API integration with bots/apps etc.) that gets tacked on.
