The Pandemic Wasn't Unknown

Tech companies were equipped largely to work from home already, but now they have to give more work from home services to the masses. They're going to start trying to compete with each other where zoom just took off. I never heard a zoom before the pandemic and everyone was like, Oh, you zoom, you zoom. That's my opinion on it of course; that's how I see it as well. But Zoom has a lot of complicated services in its product line. So realistically, what's realistic for them to have that many workers? Like one company internally doing a product like zoom? Really?