With RH/IBM IBM certainly wants to leverage the RH brand and separate it a bit from the IBM brand, while leveraging customers and technologies across the company.

Suse's current owner won't have much synergies between Suse and their real estate business (except that Suse probably rents office space there) You don't do deals like "rent an apartment, get a Suse license for free" Thus Suse, under obersight can likely set their business strategy and objectives more freely.