Taken at face value, the same thing can be said of Autodesk and Delcam.
I have no idea how Hexagon will behave in the CAM sector, but they have made a number of monopolistic moves in the metrology sector over the last 20 years or so, and you will find no shortage of people in that line of work who revile them.
I'm not sure. Delcam was publicly traded, if someone makes a serious offer to buy them, their board has a fiduciary responsibility to consider the offer.
Hexagon has a ton of CAM products - Visi, WorkNC, Smirt, AlphaCAM, EdgeCAM, SurfCAM, Peps, Cabinet Vision, Machining Strategist, NC Simul and still markets all of them to some degree. They have not just dropped any brand yet, though with that many products, with a fair amount of overlap, they could. Some products probably get more sharing of technology or more development than others, I don't know how they determine that mix today.
Autodesk certainly has shared technology across products from acquisitions, but they have also dropped ArtCAM, PartMaker, Delcam for Shoes, Delcam for Dental. The writing is on the wall for FeatureCAM and the SolidWorks version of HSM (just an opinion).