Jd Smith1
Hero
Not at all. In an economy of durable, artisan-made goods, very limited personal belongings, tremendous self- and local- sufficiency, and limited legal interference, there simply isn't enough income to justify any sort of criminal organization larger than a group of road-bandits.Thieves guilds make more sense if you treat them more like the mafia.
In a period where men risked hanging to poach a deer, or to rob a traveler of five silver coins and enough food to feed one man for three days, the idea of a thieves guild is laughable.