IMO,Remington has made some errors along the way.Often it was a silly as choosing the wrong rifling twist.
The RSAUM's? on there own,probably great...but make them just a little smaller than WSM's? Hmmm.
The comment I want to make is about Colts SAA tooling rusting in the alley.
Technology changes. A Bridgeport and a good lathe are great hobby toys today.Sure,a gunsmith can use them. But you can't compete with the guy who has Haas,Seiki,Makino etc CNC machines. To contract work you need a Co-ordinate measuring machine,etc.
My early days in the trade,we dreamed of our own Bridgeport,lathe,grinder,and a sinker EDM the way some folks used to dream of 40 acres and a mule.Times change. Gotta have a tractor.
That older stuff was made with drill fixtures and gang drills,broaches,shapers,etc. Probably flatbelt and jack shaft machines.The tools were not fast and efficient enough to rebuild. The guys with the skills and experience got old,blind,and died.
Parts designs around a shaper or broach don't necessarily produce well from a CNC mill.
The old design must be re-engineered for modern production,or abandoned.
Perhaps MIMmakes very good parts,but MIM might not make parts that compliment a S+W K-frame or 1911 sears and hammers.
Ruger excelled at adapting the forged and machined designs to investment castings. Glock put the Plastic molding machine to work.
And,I don't know for sure,but some states might tax and bleed an enterprise to poor health,and labor contracts might finish the job. Retooling and producing new designs is capital intensive. There is risk and return.
The hostile and litigious attitude toward gun manufacturers makes for shaky ground. The EPA,OSHA,etc demand millions of $ be spent,or they fine you more.Then the Health Care debacle.
At some point,why bother?
That may be why Win,Rem,Browning diversify the brand away from guns.