Changing the very product
Notice those two countries in the top?
and Denmark are both tiny countries in terms of area. They are also unlikely to make their speakers disgustingly wealthy.
As we have talked to speakers from all over it becomes more and more apparent, that what is meant by speaking is not the same everywhere. In the smaller nations above, a speaker can often get in the car, drive to the venue, give a talk, and be back for supper.
In countries like Canada or the United States distances are a bit more of a hassle. As a consequence, speakers in North America spend more time on the road (or since it is 2019 - in the airport) and make more money. But they also add to their services with things like break-out sessions, workshops and more.
And they’re away from their family for longer.