Your incorporation of official Scottish government statistics and data from Offshore Wind Scotland is commendable, as the presented figures regarding employment, electricity generation, and turnover offer a robust counter-narrative to the initial assertion. However, it's pertinent to differentiate between 'economic impact' and 'profitability' in the context of this discussion. The original claim centered on the financial metrics of 'return on capital' and 'cost of capital,' which are primarily concerned with investor yields. While your data elucidates the broader economic contributions of the sector, it remains unclear whether any reports were consulted that specifically address the profit margins accruing to the developers of these wind farms. It's conceivable that an industry could generate substantial economic activity while simultaneously yielding comparatively modest returns for individual investors. Factors such as operational expenditures or regulatory constraints, which may not be reflected in the aggregate economic impact data, warrant further investigation.