By providing research services, mentors and continuing education - all the things they'd have if they worked in big law firms - storefront lawyers could make a living charging affordable legal rates, Bryan theorized.
Lawyers can't be affordable, they could never live. 
mnli hypothesis: Lawyers can't be affordable, they could never live.  premise: By providing research services, mentors and continuing education - all the things they'd have if they worked in big law firms - storefront lawyers could make a living charging affordable legal rates, Bryan theorized.