RE: tikka T3 rifles
I don't know who else owned Tikka before Berretta. Tikka and Sako have been around a long time and produce their rifles in the same factory. I don't think either are "going away" anytime soon. And even if one would, what's the diffirence? There are many manufacturers (e.g. Winchester domestic manufacturing) have closed and nobody is racing out to sell their firearms by such manufacturers.
And Beretta as the oldest firearms mfg in history knows how to run a firearms business I think they've proven many centuries ago.