The otherwise amazing book by Ben Horowitz (of Andreessen-Horowitz fame) called The Hard Thing About Hard Things has a chapter that basically lays out and encourages this type of illegal behavior (called "Is It Okay to Hire People from Your Friend's Company?"). It literally recommends that companies maintain a "do not hire" (aka "do not poach") list of other organizations from which HR is forbidden from recruiting. I…
Seems taken out of context. Do not hire is different than do not poach. The wisdom I subscribe to is, if you have common investors, it's bad form to actively poach from portfolio companies. For companies that are later stage, it's bad form to poach key employee's from portfolio companies. Do Not Hire agreements between companies, however, seem unreasonable, except when there is clear cause for conflict of interest.
Workers should be free to seek to improve their lives without old white men making back-room deals against them. In this regard the tech industry is no more progressive than any other, and that's incredibly disappointing. We're supposed to be such an intelligent bunch.