This is so very true. We have been monitoring the bandwidth, CPU and mempools of our small Jitsi Meet instance living on an ESXi VM on a Mac Mini. We notice that 3-4 participants typically consume 5-7mbps downstream to the server and about 5mbps upstream from the server while CPU usage stay in the 15-20% range. The bandwidth scales fairly quickly with the number of participants, especially on phone type devices.