Someone offers you $XX an hour. You say yes, or no (or maybe, you complain so much that you aren't even offered the job). End of story!
Selling IP creativity by the hour can work as a business model for some, but that's generally what is expected from employees. In exchange for surrendering the IP of their ideas and endeavors to their employer, employees a regular paycheck, paid holidays, get the tools for the job provided for them and possibly enjoy healthcare or other benefits. Freelancers/individuals do not get these benefits but still have to provide their own equipment and insurance etc etc etc.
There is a costing model called BUR - Base Use Rights. You work out your annual overheads, add the profit you want to see and then divide the figure by the number of anticipated working days in a given year. This figure (say $1000 per day) is your BUR for a one day shoot with the following rights; Single territory, 2 media, 2 year duration. The BUR goes up if the client needs more media, longer time etc etc etc.
Its all based on costing images around the benefit to the client and saves them paying for use they won't ever need. More use = higher BUR.
(Apologies if I'm teaching my grandmother to suck eggs........)
I would rather negotiate a right to use for their specific purposes, including an exclusivity clause for a given term if required. There may well be occasions when all rights is appropriate, and this may well be one of them, but in my experience the client wants rather than needs all rights and can be prepared to negotiate if asked.
I'm not saying the idea of surrendering all rights wrong, just that the BUR model gives flexibility to both client and photographer.