I’m with Cadjunkie on this one. I am 100% absolutely certain that Autodesk will come in with the fee hammer when (if?) it gains sufficient traction in industry. They could kill Inventor off with it even.
They will 100% be asking for over £1k a year for Fusion 360 one day, but that is impossible given their current market share. Enjoy it while it’s free and cheap - it won’t be forever.
As far as I am aware a lot of people plan to stick with Rhino 5 and whatever the last tsplines version will be.
Alternatively look at buying a Power Surfacing license for SolidWorks for about $1,000.