Salary is only a part of the equation. Think cost of living. The cost of living in a city like NY, LA, or Chicago is far different than in a smaller, more rural town. If you made 99K and lived in a small town in the middle of Kansas, you would be living large. In a big city, think ridiculous taxes, high cost of food and goods, gas prices, private schools(if the schools in your neighborhood are lousy), home prices, property taxes, etc, and that 99K doesn't go nearly as far as you might think. Yes, that IS a lot of money, but you need to put things in context.
Salaries in larger towns NEED to be higher- especially for city workers mandated to live in the area- or people would never be able to afford to live and work there.
Think about it- would you want to be a NYC or LA cop- with all the dangers they face- and try to live on 30K/yr?
Yes, EMS salaries need to improve everywhere, but we also cannot directly compare our jobs to being a cop or firefighter in terms of job description. A firefighter or cop's basic job description is essentially the same wherever you go. There is no stereotypical EMS provider. Think of all the types of providers and the differences between their job responsibilities- from advanced to basic, private, special events, hospital based, fire based, county, etc. It's impossible to come up with a standard pay scale that would apply to the entire spectrum of what we do.
That said, yes, we do need to be more organized politically, but for the above reasons and more, even with a major union affiliation or organization, it would be difficult to generate a cohesive national agenda that takes into account the various levels of training and/or job responsibilities.