Nah, you are not understand. Purpose of PoB - do mining fasta, and involve indie solo miners in it, and help traders and miners from diffirent timezones play their game. Im use PoB in texas in manner - fast mining with friend to full PoB. After this distribute it by another traders from my station. Solo miners just keep some level of fill, but they never enough for wide trade. And how i know, all profitable PoBs around mining commoditys uses in completely same manner. Its how freel economical work today. Activity hot spots on mining fields its only for solo pirates, for any pirate group more easy camp commodity streams.
I mean, i use PoB for do boring rock shooting as fast as i can, and start do another activity. Also it offer sell/buy points to traders. All people who want play miner RP play it already, Other dont make any RP for miners, even if you put them between swarms of enemy, they just continue do hegemon and fast PoB mining.