Your response assumes that the system operates alongside the current employment system. If every company operated that way, sure there would be disruption - but if you imagine a fluid system, no one would be disruting their 'current' position because every break can be made cleanly. Think out the box about what you've said as opposed to with the lense of how the current system works.
Also if you consider the long term evolutionary impact: as people have the flexibility to try out companies a) candidates will be more experienced as they will have received training from different companies b) candidates will know exactly what roles suit them c) companies will only be populated with people who want to be there hence leading to greater productivity.
Overhall the current system. As myyoung8 said - how many people want this but can't have it. This is the sign of a broken system.
Also if you consider the long term evolutionary impact: as people have the flexibility to try out companies a) candidates will be more experienced as they will have received training from different companies b) candidates will know exactly what roles suit them c) companies will only be populated with people who want to be there hence leading to greater productivity.
Overhall the current system. As myyoung8 said - how many people want this but can't have it. This is the sign of a broken system.