So… Who exactly pays for your food? There’s really no reason you should be earning a salary if kids in China can do it cheaper. Right?
How about labour costs, certification costs, operation costs, development costs, support costs… Sure, you can ignore all those because you saw something priced at a lower tier somewhere else, but that’s not realistic. If I’m not mistaken, a lot of the work that went into the RPI ecosystem was ‘donated’ in one way or the other, be in in engineering time, or lower prices on chips, or other deals.
In that case, why would microcontrollers even still exist, since they’re clearly not ‘powerful’ enough, right? Ever tried doing timing sensitive stuff on a Pi? “Bigger numbers” in the specs don’t tell the whole story.
But hey, if you feel the Photon should be only $10, why not buy the P0 chips at that price, and then convince suppliers to hand you the remaining items for free because there’s “no reason they shouldn’t be” ;)?