I still believe this is mostly sound and fury, a publicity stunt and little more.
Most of our national team guys are either playing with larger clubs in Europe with a handful of designated players in MLS. The $2.5 million qualification bonus for the USMNT (which amounts to about 75k per player? I dont know how they divide it up based on appearances, etc.) is a rounding error for guys like Pulisic, who makes over $10 mil a year. Many of the USMNT guys don't have gigantic salaries ("only" a couple mill a year) yet because many of them are still very early in their careers and will likely be signing more lucrative deals in the near future (Adams, McKinnie, Reyna, Aaronson, Dest and a few others).
France players got $500k a piece for winning the world cup with it's 10 WCQ and 7 WC matches.
Mbappe was offered over $1 million per week by PSG, while he'll take less from Real Madrid due to their financial struggles, it just goes to show you how little most men's national team players actually even care about how much they make from national team duty. The $500k bonus for all of the France players is less than almost what all of their entire selection is making when playing for their club for a month. It's about the prestige, not the money. The women's players need the national team just to make a living.