One counter point... think about who is lobbying for changes. If it's primarily founders/executives at startups, know they do not stand to gain from removing these golden handcuffs. This bill will make turnover higher and hiring more expensive.
It's a double-edged sword. It also means that it will be easier to hire people away from the start-ups. Google/Facebook/Amazon, even Oracle, must be getting a lot of "nos" from start-up people who'd be interested, but are going to hold out for a year or two more (and who aren't quite valuable enough to buy out).