When the "entrepreneurs" very status in the US is dependent on being in the good-graces of anyone else - especially vultures like VC firms - these "entrepreneurs" are no better than indentured servants.
Think of it this way - any dispute with the "sponsoring" VC firm could snowball into a complaint to DHS which could result in the "entrepreneur" having to leave the country (and leave behind the carcass of a company the VC's will then proceed to digest).
Entrepreneurs might not understand or appreciate this yet, but they are better off going to Canada or somewhere else as landed immigrants with rights - instead of living in the US as indentured servants of some entity.
The junking of this rule has potentially saved so many startups from being absorbed by entrenched players (Hello Google Ventures). The resultant dispersion of wealth/ideas and the increase in competition will benefit all of us.