Search for Corona when you started this magnificent render engine was 0.
Search for Blender can be even ranked 1000, in general Blender users know that Corona don’t support Blender so don’t expect any higher rank in search or any other metrics.
Blender is not an stablished market in ArchViz, it is a growing market, you CAN create such a market instead of just relying on the existing market or waiting until others create such a market.