By all means, I would love to be reimbursed by the company offering me an interview, but on the other hand; in this day and age of airlines, think about the possibility that IF they were obligated to pay for all expenses, wouldn't they start looking for candidates near the location of the interview just to save a buck or two? So then you would be discriminated for living far away from your potential new employer!
I think it's fare that if you apply for a job, you see to it that you make your way to the interview. If you look at the potential employer as a long term commitment and not a stepping stone, the chances of employment should be worth paying for the travel and accomodation.
This really is a no-brainer compared to paying for type rating/line training and/or half-pay until base check etc...... THAT'S where the REAL scam is taking place....!
/glider