This is a bit like calling your company "Red Cross Pharmaceuticals" despite not being affiliated with them.
In fact atleast over here in Finland naming one's company is specifically reviewed by the patent and registry bureau to make sure it doesen't resemble any existing companies. It costs around 100-450€ and is mandatory for any new company
> It was this bill that led me to publish PGP electronically for free that year [1991]
https://www.philzimmermann.com/EN/essays/WhyIWrotePGP.html
> It was on this day in 1991 that I sent the first release of PGP to a couple of my friends for uploading to the Internet. First, I sent it to Allan Hoeltje, who posted it to Peacenet, an ISP that specialized in grassroots political organizations, mainly in the peace movement. [...] Then, I uploaded it to Kelly Goen, who proceeded to upload it to a Usenet newsgroup that specialized in distributing source code.
https://www.philzimmermann.com/EN/news/PGP_10thAnniversary.h...
Symantec later bought it and things changed, but thanks to there being an open standard (OpenPGP) and RFCs, people can and did write compatible software. With varying degrees of compatibility, admittedly.