Petition? Write to congratulate Ferrovial on successfully gouging the most possible profit out of its captive pax.
By dismanning security until they could handle only 1 bag, by stealing the most passenger-space for retail and by ignoring the most urgent maintenance to every moving part, especially the baggage handling-equipment in Summer which resulted in a mountain of dispossesed luggage on the tarmac.
Ferrovial cannot possibly "improve" its service - for the company's profit all avenues are already maximized.