"Zoom needs to be enough better that they can charge for software that other people are giving away
I can’t buy the argument that a service option is “better” because it is “free”. That equation works only if the competing service is “better” AND “free”.
“Microsoft in particular is already in the business sphere (most PCs are Windows, loaded with the Edge browser and Teams and such).”
Correct, and these behemoth video conferencing services, or subsets of them, have been in play since the day Eric Yuan left WebEx to start his own company. He has been pushing the rock up the hill since 2011 against competition from these behemoths.