You are right that people can unite in favor of a principle - like capitalism - and needn't be joined at the hip ideologically.
If conservatives realized this, without compromising core principles, and quit with the blunt, unsophisticated, and ham-handed approaches that give rise to the unflattering stereotypes that plaster us as a group - we might just win some friends and support.
I learned another useful term recently: "M&M diversity." Meaning, different colors outside, same content (ideology) inside.
I'm just itching to see that label engraved into a millstone and hung around the neck of all these corporate diversity police who don't understand real people.