Is this internship a California thing? Never heard of anything like that here in Wisconsin. Just clinicals and then you're ready to work.
It's just wording; I'm positive you have it in Wisconsin.
The clinical stuff is the hospital based clinicals. The "internship" is the ambulance based clinicals. Many/most places will hire their paramedic interns because they have seen their work, they are familiar with the agency's protocols, and they are familiar with the person (assuming they liked you). It's a safer bet than hiring a newbie medic with 0 experience.
That's why AMR is paying people to do their internships there; it's win/win, where they get to evaluate you before you become an employee, you get paid for your time, and if you aren't cutting it, they can terminate you. and if you do a great job, they keep you for 2 years.
If you really wanted to have a good chance, do your internship somewhere where you want to work. My school had agreements with EMS systems in other states. If an agency doesn't have an agreement, ask your school and that agency what they would need to do to set one up.
Your internship is the final part of paramedic school, where you can put all you learned into practice. But that's not the important part; It's actually a really long job interview, where you can show the employer that you want to work at what you can do, so once you complete the requirements, and pass the NRP exam, they will offer you a job.