ra4000. The number of pilot ITR's that come with a new G550 or 650 is completely negotiable, but is usually 3 not 4. It also comes with a Mx initial and an FA initial. All of these can be traded up or down for spares and maintenance or indeed other training.
As far as Part 91 and some 135 companies go, most don't give a damn who paid for the rating, it is no less of a rating if you paid for it yourself. What they care about is experience, attitude etc. Our contract pilots are responsible for ALL their own training, and in return for that, we pay them a substantially higher daily rate than a normal line pilot. They are short term contracts to fill in, are expected to know company procedures and expected to be current and qualified.
The reason you don't see many 135 contract pilots is the required 6 monthly recurrent, which would make it financially non viable or profitable.
I have never sat in an interview where a candidate has met all the requirements but the panel has said " Oh no, we can't take him, he self funded his type rating"
Companies are about making money, irrespective of the moral arguments for or against "self funded training"