When you follow the anti-spec argument to its logical conclusion, you wind up in the same place as the interior design industry, which creates State Boards of Certified Interior Designers and attempts to enact laws prohibiting (to paraphrase Radley Balko) the placement of a throw pillow without licensure.
It's all about restricting demand to improve the outcomes of industry insiders at the expense of industry outsiders.
The guilds in medieval Europe had this figured out very well. Also Terry Pratchett is portraying the same situation very nicely in the Discworld novels (assassin's guild, tomb raider's guild etc.)
It's all about restricting demand to improve the outcomes of industry insiders at the expense of industry outsiders.