IMO privates should go away, and fire or PD should have an EMS division, or EMS should be its own county/city entity. Fire/ALS should not exist, deticated ALS ambulance under a fire department is ok though. Its too much to be a good firefighter and a good medic, they are two totaly different jobs.
First off. There are just as many bad FD EMS services as there are bad privates.
Furthermore, the bad FD services actually affect a far greater number of patients.
Now that we got that out of the way...
I think EMS should be its own entity. Not because the fire service can't be good at it. There are FDs that provide great EMS service. At least they provide what could have been consdered great in the year 1980.
The only things that really stop FD from being great ALS transport services are money and how much the organization values the mission of EMS.
Having said that, the reason I think it needs to be seperate is because the ALS transport method of EMS is not sustainable. There simply will never be enough units as call volumes increase. Dropping everyone off at the ED that calls an ambulance is an economic nightmare.
As such, the future of EMS will be both more of a publichealth/prevention role and properly dispose of callers to the correct healthcare or social entity. (navigating healthcare for the pt.)
Not because I said so. Prevention was the major aspect of success in both the FD and LE. Prevention is cheaper than emergency by a lot. It reduces call volumes so you can respond to emergencies with a reasonable amount of equipment and people.
We have advanced medical knowledge to the point where "acute" emergencies barely exist. A majority is exacerbation of chronic health problems.
The current US ALS education and service model is not designed for this. It will have to evolve. That will require paramedics to be educated on who needs to be admitted, treat and release, etc.
Which means, sooner or later, most likely later, there will be so much required to be a good medic that either A. these providers will suck at firefighting/rescue/hazmat/etc. etc. because they spendso much time on the healthcare aspects of EMS. (Much of the fire service is a skill, like all skills when you don't use them you lose them) B. Paramedical education will attract people who either don't want to be firefighters or don't have the physical requirements curently accepted. (Because they spent more time at school than in the gym, there are only so many hours in a day and I can tell you the gym was not even on my radar in medical school.)
As for not being able to be good at both. I think it is evident that people who fight a lot of fire (mostly urban municipal) are good at it. People who see fire once in a while are not as good at it. But the day is coming when there simply won't be enough hours in the day to practice fire service skills that are hardly ever used and provide healthcare.(both emergent and non)
The reason most FDs that currently do EMS are not good at it isn't because they can't be, it is because they don't want to be.