就业面窄不窄，和什么专业没有关系，关键看你自己的思路窄不窄。
学工科的人，什么行业都能做。

co-ask
In the hey day, people all chose to get a MS and then make big bucks; when time is hard, Ph.D may be an option.
But is it just an escape or is it worth the pain?

I believe it depends on your research field. If your area is artificial intelligence or bioinformatics, a PhD may help to get a research scientist position. Otherwise, it depends on what you know but not what degree you hold.