it is my opinion and mine only, that one hour labs will begin to disappear. There may continue to be enough business for one of two, but most will simply wind up as photo kiosh for degital media.
The return of the regional photo lab to service several drugstore type business will probably make a comeback. The three day to 24 hour lab service will most likely still be available for some time to come. I think the availability of film will shrink as it has been doing for years. The cost my well go up. Simple supply and demand will cause the supply to shrink as well probably driving up the cost over the next few years.
In 1970 I could walk into a drug store and buy a roll of black and white film, I no longer can. The number of readily available brands and emulsions may shrink, but there will be film made in third world type countries for years to come, I think.
If you are getting a good deal in the camera go for it. I personally shoot cameras older than I am. I mostly shoot black and white film made in poland or hungary, so times they are a changin. There is no sense trying to deny it but I don't see an early demise in film.
Eventually possibly, but as long as the world doesnt have computers in every home and a chicken in every pot, somebody somewhere will be making film. I personally do not shoot digital cameras or media ,so I'm not the best person to listen to.