Dominos or John Lewis are perfectly entitled to make an application and I am perfectly entitled to make an objection or support their application as I see fit. If my objections have no relevance in planning law then they will be ignored.
But I wonder, if you're being really honst with yourself, you would've objected in the same way if a desirable shop had made the application and wanted to change the sineage. It's easy to say 'I object to this becasue of poor design', and yet this could be a smokecreen because you don't eat pizza and you look down on the use of pizza takeaways. 'Poor design' would be waived for a worthier business.
I wonder if the planners would object to the 'change of use' if something had strong local support and the businesses was a 'desirable' one for the area to have?