That's definitely one of the possibilities and when that happens I blame the person facilitating the meeting. Everyone should have their turn and it's up to the facilitator to ensure it. If everyone (in a group meeting) spoke up at the same time everyone would be talking at once and that's not going to lead to a good outcome.

It happens like that of course, but should not. The facilitator needs to control the evv and flow if the meeting, cover off on each element of discussion and allow each to talk if/when appropriate; it's not always easy to do this, but it's essential in large meetings with many attendees. Free for all meetings are rarely productive.

I get why you'd be frustrated, I would be too.