I think your future is largely the result of your expectations. If you go into something thinking, “This will never work," it probably won't. It makes you the victim of a self fulfilling prophecy. If you think AM will never be viable, then I suggest not investing in any AM stations. I know quite a few people who do operate small AM stations and they seem to be doing OK. Sure, AM has its technical challenges, but it is not dead. Adding more interference to the band is not going to help.
Unless you take Radio World's "Guy Wire" to heart and take steps to "thin the herd," IBOC on AM will not be a good solution for most stations, especially those that are not high power. I'll be the first to admit that thinning the herd might make sense to make room for HD, but it only makes sense if you are not one of the stations that are on the endangered species list.