[narayankpl]

No I do not think have been an entrepreneur makes you unemployable. You could be unemployable for a lot of other reasons. But it is likely that some entrepreneurs may not be happy in this situation and should an opportunity arise, they might go for it again.

[dear]

Isn't it the point? Unless the prospective employer is very open minded, an entrepreneur could be viewed as unwilling to work under a boss, and likely not a long term employee.