Just a few unbiased comments:-
I couldn't see ASW fitting into the EZE business plan which seems to be niche business routes at relatively expensive fares which seems to fit in with the current aircraft fleet.
I presume ASW was losing money on its operating network using a fleet of fuel hungry aircraft and maybe operating some "seasonal" routes as "all year" routes and losing a lot of money out of season.
Sutton Harbour probably wanted to close Plymouth airport, maybe because of its restricted size and lack of development potential.
Profitable routes are usually seized on by the survivors in this dog eat dog business.