I think the outcome of the survey is pretty predictible, and also accurate. There are not many bussiness models in SL. Those remainings are those who can't move to Sansar (rentals, Gor-related, everything that implies scripting in LSL, also sculpties builders, game makers, etc)
On the other side, the mesh builders probably voted out of SL. Better envirnonment promised by Sansar would be an increase on such bussiness. The software used for 3d modelling is the same. A higher budget for advertising Sansar over SL will also be noticeable