Luxury/performance car brands like Porsche, Lambo, Ferrari, Rolls, Bentley, etc. can't exist stand alone, they just wouldn't be profitable enough if they had to

Luxury/performance car brands like Porsche, Lambo, Ferrari, Rolls, Bentley, etc. can't exist stand alone, they just wouldn't be profitable enough if they had to develop everything in house. Hence why most of them brushed with bankruptcy and had to be bought out by bigger conglomerates that give them access to the supply chains and economies of scale the likes of VW or Fiat enable. It's how the famous Swedish SAAB went bankrupt. They were spending most of their budget on developing a decent media infotainment unit, instead of using a terrible already developed one form the GM parent company.