https://www.theguardian.com/technology/2020/jun/03/facebook-and-microsoft-muscle-in-on-zoom-video-call-boom-google

Google also aims to be part of rise in teleconferencing during coronavirus crisis

Zoom may be booming as the global coronavirus lockdown moves work and social life to cyberspace but deep-pocketed rivals including Microsoft, Google and Facebook are taking aim as video conferencing becomes a staple of daily life.