ridgid is not owned by the same company.
the sales rep goes to the stores to set up new displays and put up new signs. they just kill two birds since it makes no sense to send 2 people to the same stores to do the same things, so obviously they will advertise the premium brand along the way.
tti makes tools for ridgid under a licensing agreement with Emerson if i remember correctly, but Emerson owns Ridgid, not TTI.. the two companies are completely different.
Ryobi and Milwaukee are separate companies. they are just owned by the same parent company, just like Ford owns Lamborghini. They are completely separate entities.