I think it’s more that more and more brands will become just that: brands owned by a much larger group.

There’s a lot of consolidation going on in the market. https://en.wikipedia.org/wiki/PSA_Group already had quite a few brands, but merged with https://en.wikipedia.org/wiki/Fiat_Chrysler_Automobiles to form https://en.wikipedia.org/wiki/Stellantis.

https://en.wikipedia.org/wiki/Volkswagen_Group similarly, has quite a few brands.

Ferrari at sometime was part of https://en.wikipedia.org/wiki/Fiat_Chrysler_Automobiles, the predecessor of PSA group.

Maserati already is part of a larger group. It is owned by Stellantis.

Lamborghini is owned by Audi, which is owned by Volkswagen.