I feel like Zoom is the least concern. It is relatively replaceable, unlike providers with significant network effects - payment processors (Visa, Mastercard, P

I feel like Zoom is the least concern. It is relatively replaceable, unlike providers with significant network effects - payment processors (Visa, Mastercard, Paypal, Stripe), social networks (Facebook, Twitter, Reddit), ad networks (Google, Apple, Facebook) or dominant share (Google search).