Shy of going into the military to get trained for many the only way is via a system such as Bristow offers....at least with Bristow you will not see combat....you may get shot at or even wounded...but it will be during an armed robbery.
That did happen in Lagos, Nigeria as a crew bus was departing for the airport.
if an employer takes you on and you go through their school and obtain your Commercial/Instrument Licenses and a job where you get to gain experience and flying hours....you should expect to pay back on all of that expense.
As in every situation like that....aviation or anything else....the Devil is in the details.....get everything in writing....if a promise is made....document it in triplicate.
Life is like a mountain...if it is smooth...you cannot climb it.
Just make sure what you are getting into when you sign the Contracts.