I doubt even 1% plays open only. The "gankers" know how to stay out of fights they can't win. They go solo/pg for engineering, farming mats etc. Nobody does Dav's hope in open for example. Open only needs a whole new play style.
I doubt you're even close to correct. So if Open Only needs a whole new play style, what you're suggesting is people need to play like me? Not that I disagree, I am bloody spectacular, but my play style is really not that 'new', I have a small fleet of ships, all G5 engineered (some combat focused, mostly multipurpose, one mining), and importantly, I pay attention to what's going on around me. Mostly, except when I'm tired, or just back from the pub - like the other night when I shut down to reboot & repair, after lifting off, only to be reminded about gravity.
To be fair, I am playing in a PG for the first time ever atm, not to avoid gankers, but because where I am there's nobody else around who isn't in the PG. If I'm honest, the complete lack of any potential danger from other pilots is turning me into a lazy pilot.