Agreed, GLA and EDI are both local airports that are now knocking lumps out of each other with EDI doing to GLA what GLA did to PIK. Left to the unregulated free market, EDI triumphs but won’t spend the money to rebuild whereas GLA stands empty for much of the day.
A proper central belt airport would require both EDI and GLA to close and we as the public, no longer own either of ‘em.