The problem with holding a grudge is that your hands are then too full to hold onto anything else. It might be the competition or a technology or the lousy things that someone did a decade ago. None of it is going to get better as a result of revisiting the grudge.
If you think cat food is for cats, how come it doesn't come in mouse flavor?
Every revolution destroys the average middle first and most savagely.
Successful people are the ones who are breaking the rules.
Be personal. Be relevant. Be specific.
Catering to the passionate is exactly what you should do.