A lot of people are under the assumption that auto manufactureres are required to stock parts for 10 years on their products. That law is gone. It is no longer required. Getting rid of that law has saved auto manufacturers tens of millions, if not hundreds of millions of dollars every year.
So they commission a number of a product depending on what they expect to sell based on the history of that product. When it runs out, it is gone and they leave it up to the aftermarket. Example, my 2016 Scat Pack chewed up the input shaft of the manual transmission. Discontinued. They still use the same shaft on 2019 cars. But it is not a common failure and what stock they did produce ran out.
Good, bad, it is one of the many reasons American car compaines are still in bussiness instead of relocating over seas 100 percent. Same with going modular. Dodge rear ends and automatic transmissions are sealed units. Whe they fail, they get replaced. They no longer need to hire and train a transmission specialist for every service center. Just a generic parts swapper. Saves time and money. Then they send the unit back to germany, getrag, and get a replacement or an allowance depending on what was wrong.
So far, Ford and GM still make the parts. But Dodge and most of the other foreign car companies (dodge is owned by fiat), do not. GM is a *****. If it sells, they will continue to make it. I can still get a power lock actuator for a 1990 chevy silverado from GM.
If you buy new, this is not an issue. If you plan on keeping it or buy used, then get educated. If you like Dodge, and i do, there is always a way to solve a problem without taking it to the dealer. If you do not want the hassle, buy Ford or GM.
Wait until your fuel pump relay fails. It was incorperated into the fuse box itself under the hood. When it goes, you will have to replace the discontinued fuse box for hundreds of dollars instead of just replacing a relay. Either roll the dice on a used unit from a junk yard or, believe it or not, there is an aftermarket company that refurbishes the fuse box for 500 bucks. There is always a way outside of the dealer. Or buy Ford or GM.