Nobody knows what that royalty rate will be, and it will certainly be variable. If POET can show that exclusivity for a particular vertical/device, etc will result in a potential loss of xx millions in potential revenues, that cost can be justifiably added to the royalty rate as the value to the exclusive partner could be multiples of that figure, since their market share will grow substantially.
My suggestion, use a lower number, say 2-3% and be pleasantly surprised with the outcome. It will be much more difficult to estimate market penetration per vertical over 1,3,5 yr periods due to the anticipated evolution to POET from PET. But you also need to consider the "horizon" market growth (those new and exciting things the technology will give birth to), IoT, etc. And each vertical will have different levels of penetration, margins, royalty rates. It will be an ongoing and enjoyable exercise.
