The meeting itself
Google Meet
Participant capacity is published per plan (100/150/500/1000) with 24-hour meetings, in-domain live streaming and a hardware-room add-on, which is genuinely strong scale. But the evidence is silent on screen sharing, breakout rooms, host moderation, waiting rooms and what happens on a constrained connection — undocumentable mechanics cannot be relied on for a works assembly.
Wire
The published pages give hard numbers only for capacity — video conferences up to 150 participants and chats up to 2,000 — while we found no public information on screen sharing, breakout rooms, mute-all or any host moderation, nor on what a call does on a constrained connection. For the chair of a council meeting, none of the controls that make a meeting governable are documented.