Not sure which patents they are wanting royalties for here, but I think no matter what it needs to be a flat amount per device sold. That's the problem with Motorola's asking price on royalties -- they want a percentage. Other problem is that they are trying to get paid for patents that:
A) They have already been paid for (via Qualcomm, Apple's supplier)
B) That are FRAND patents (i.e.: Motorola's doing a bait-and-switch offer for FRAND, and then trying to extort adopters)
To me, patents have a fixed value per unit and that value should not change regardless of the selling price of the overall product. The selling price of the product may dramatically increase due to some other feature completely unrelated to the patent, hence percentage royalties (especially for FRAND) make no sense whatsoever.
On Apple's side, the "Kill Android" and "Spend Every Last Penny" philosophy that Steve Jobs took was never good business. Statements like that make share holders cringe. Business is business and personal is personal. Jobs tended to blur those lines. The only good business reason for Apple to refuse licensing of patents if they can:
A) Successfully prevent competitors from working around the patent
B) Successfully defend the patent in courts
C) Extract more market share due to the patent that would drive more revenue than licensing fees
D) Licensing the patent would dilute Apple's brand and commoditize their products
If the patent does not meet the above tests, then it should be producing revenue for Apple if it can.
Incidentally, I believe that Apple protecting its brand via legal action regarding "trade dress" makes perfect sense. However, the only Android manufacturer that aped Apple's packaging and marketing materials was Samsung, and even they do it a whole lot less now. Most of the photos I've seen of Samsung copying Apple are older products, though I think their power adapter is till a black version of Apple's. Though I think Samsung's change was due in part to Apple's legal action.