You can count on it!
I've set myself up for the .350RM for the long haul since I'm dumping some change into my existing M7:
https://www.thehighroad.org/index.php?threads/show-me-a-carbine-with-real-power-and.910169/
I've now also set myself up to convert belted magnum brass into .350RM, and secured a couple hundred once fired 7mm RM, so the only possible issue now is bullets.
I also agree about the companies that have left us high and dry. Pretty sad really. My absolute favorite bullet for the .350RM is the 225 Nosler Partition. I've been searching for them for at least a year and a half now. I've got 25 loaded rounds and 16 spare bullets against an upcoming elk hunt next year.
Unfortunately these kinds of issues put guys off some pretty unique and effective calibers that are perfect for a particular set of conditions. Before you know it we'll all be shooting .308s and sayin it's "just as good".
And what's the fun in that?