Honestly, I don't care.
EMS service is the responsibility of the AHJ, in this case, the town administrators and the elected leaders. Having your own EMS system is not cheap, so if the town is ok with the EMS agency coming from other cities or having 15-20 minutes, that is their choice. outsourcing EMS is likely going to be cheaper for the town, but services will likely suffer.
Here is what I predict will happen: Aetna will win the contract, and the town will shutter their EMS system. The town or non profit will sell or eliminate their assets, as per their charter, and people will move on with their lives
in 1-2 years, as the contract is up for renewal, response times will have increases, and the townspeople will become more disillusioned with Aetna, and will want their old system back; however, since it has been sold off, that will no longer be a solution, so the town will try to leverage Aetna to get more resources in town, not realizing that they no longer have any leverage. They will try to find another EMS service, but find they can have the service good, cheap or fast, not realizing they can only have 2 out of 3.
the town will then ask the fire department if they want to start an EMS system, and the FD will push back hard, unless it's entirely funded by the township 24/7. the town will consider, until they see the costs, and then wish they still have the volunteer EMS system around where they could dump this issue on without having to fund it 24/7.
Just my predictions