No, it doesn't necessarily mean they won't move on to something else later, but they're now living in a universe where it will always be Autodesk's job to make that harder or less obvious to them. By any means available.
I'm not sure keeping hobbyists locked to a particular platform is that useful to Autodesk, especially considering the prices they charge for higher level software.
If it wasn't Autodesk doing this, would you have the same reaction? What about Makerbot's move away from open-source?
I would have exactly the same reaction - I don't have any issues specific to Autodesk, apart from those that I've expressed here related to their 123D suite.
No, it doesn't necessarily mean they won't move on to something else later, but they're now living in a universe where it will always be Autodesk's job to make that harder or less obvious to them. By any means available.