McBride said that his company will be concentrating on the legal action it already has underway, rather than suing "another 10 companies".
"We're not focused on doing more end-user lawsuits right now. We want to have our claims heard before a court," McBride told the Financial Times.
SCO's UK operations could not immediately be contacted for comment.
SCO began its legal assault against Linux back in 2003, when it claimed that IBM had misappropriated its Unix trade secrets. It subsequently became entangled in a fierce scrap with Novell over precisely who owned key Unix patents and copyrights.
SCO's attempts to persuade companies to buy licences permitting them to run Linux without the threat of legal action appear to have been largely unsuccessful. SCO has sued several companies, but last month it largely lost a courtroom battle with DaimlerChrysler over the issue.
This defeat led to suggestions that SCO's challenge to Linux could be a busted flush, but McBride is still talking tough. He compared the setback to "losing a spring training baseball game".
SCO has now realised that it can't actually win a single case. It's money is running out. And it probably hopes to make the world forget what a-holes they have been over the past 20 months.
Sorry SCO/SCOX/Caldera/TSG. No one will ever trust you in future. Ever.
Sorry SCO, but several million Linux fans will not rest until you are dust.
Sorry Darl, Blake et al. Wherever you go in the IT industry, your bastardry will never be forgotten. Every effort will be made to put you behind bars courtesy of the US SEC.
Sorry Laura Didiot. Sorry Rob Enderle, and the rest of you clueless whores. You will be trailed by stench for the rest of your careers for being such avid supporters of SCO, months and years after they were shown to have no case.
Unlike corporations which can have their opinions bought out or assuaged by money, Linux fans have a memory that goes on forever. They do not forget who their friends are and treat them very well. They never forget who their enemies are. And you all are enemy number 1.
And it should be a lesson to any other group which makes such a vitriolic, cynical and dastardly attack on the code written by millions to be openly shared by millions.
If you try to make a beautiful gift appear illegal, your efforts will be repaid tenfold.