In the last 15 years, I can only recall one time a car went into a shop for a reason other than the above and that was an independent shop where I was too busy to deal with the job. That's across a Mercedes, a Jeep, a Honda CR-V, and Alfa Romeo, and some classic Mustangs.
There are a few marques that are DIY-unfriendly (hello, BMW), but most cars can be effectively DIY maintained. A DIY-friendly car would not be as disruptive as perhaps you think.