It’s harder to organize a boycott against something that is unique and has no comparable competitors — like the NFL or a TV personality like Tucker Carlson.
The most effective boycotts I’ve come across have been done at the distributor-retailer level … generally under pressure from their customers. Anheuser-Busch may not care if a bunch of customers stop drinking their beers, but they will be alarmed if a major store or restaurant chain stops ordering their brand entirely.
Consumer boycotts don’t matter because even though Inbev lost revenue their stock price is up because investment firms like Blackrock are buying their stock and have trillions in assets to do so. The only way to actually stop this is to go after Wall Street.