No they are not. They are exponentially increasing. Due to the exponential scaling needed for linear gain. Otherwise they'd fall behind their competition.
Fixed cost here means that the training costs stay the same no matter how many customers you have - unlike serving costs which have to increase to serve more people.
simonw|11 days ago
3form|10 days ago
>Training costs are fixed at whatever billions of dollars per year.
Which I think is the part people disagree with.