For instance the original Pi SoC was very clearly intended for some set top box OEM that didn't pick it up for some reason.
When that happens, after a while the chip manufacturer is willing to sell them for way below cost just to get anything back from their inventory that from their perspective looks like a complete loss.
So you get an industrious cottage industry that takes those to cheap to make sense chips, cost reduces the reference design, and ships them with the just barely building sdk from the chip manufacturer.
At the end of the day Qualcomm doesn't care about this market because they are pretty good about keeping their customers on the hook for their bulk orders. So they're focused on supporting current bulk customers where a $1k dev board is actually a really reasonable price.
https://www.lantronix.com/products/snapdragon-8-gen-2-mobile...
I really don't think undercutting their evaluation board business with affordable SBCs would hurt their bottom line.
The Raspberry Pi is an anomaly that's unlikely to be replicated.
If you think an i3 is "meh", you know nothing about computers. For the vast majority of users including gamers, an i3 is overkill.
https://www.cpubenchmark.net/laptop.html
you can see there is no i3 outperforming a base M3 and while some i7's and i9's (and Ryzen's) outperform even the top M3, it's only so because of core-count (at the expense of increased TDP and shorter battery life).
And regardless of benchmarks, an i3 will overkill any workload the average man will ask of it. You do realize an i3 has 4 hyperthreaded cores these days?