Why is it that other industries, like the motorcycle industry, have figured-out that not everyone's head is the same shape, but the bicycling industry hasn't?
Apparently my 60cm-ish melon is more of an oval shape than round and as a result, every helmet I've ever owned has a tendency to irritate me at the front and back of my head and be loose on the sides. I've owned several Giro helmets and I currently own a LAS and Lazer helmet, but they all have the same problem in that they seem to be designed a different shaped head than I have.
I'm getting rather tired of ordering new helmets ($$$) only to find-out they're all designed for rounder heads than I have and then dealing with the mild headaches caused by the helmet shape. Am I the only one on the planet that experiences this issue? Are any cycling helmets specifically designed for "long / oval" heads? (I searched for other posts on this issue but the ones I've found are all quite old and out-of-date.)
Update: April 2023
After reading several reviews that the Specialized S-Works Evade 3 fit people with "long oval" heads, I took a risk and bought one (on sale at Erik's Bikes). I must say, it does fit my noggin' quite well. On my first ride with the helmet, it was a total non-event in that I didn't think about my head at all. In addition, I'm able to wear a sweat band under the helmet without issue, compared to all my past helmets where just the few millimeters of cloth from the headband would cause the helmet to not fit again.
I do think the Evade is extremely over-priced for what it is, but it works for me. The only thing I don't like is that the front vents have no bug screen and on my first ride I could feel a bug crawling around in my hair, but nearly no helmets sold in the USA have bug screens, so I digress.
Apparently my 60cm-ish melon is more of an oval shape than round and as a result, every helmet I've ever owned has a tendency to irritate me at the front and back of my head and be loose on the sides. I've owned several Giro helmets and I currently own a LAS and Lazer helmet, but they all have the same problem in that they seem to be designed a different shaped head than I have.
I'm getting rather tired of ordering new helmets ($$$) only to find-out they're all designed for rounder heads than I have and then dealing with the mild headaches caused by the helmet shape. Am I the only one on the planet that experiences this issue? Are any cycling helmets specifically designed for "long / oval" heads? (I searched for other posts on this issue but the ones I've found are all quite old and out-of-date.)

Update: April 2023
After reading several reviews that the Specialized S-Works Evade 3 fit people with "long oval" heads, I took a risk and bought one (on sale at Erik's Bikes). I must say, it does fit my noggin' quite well. On my first ride with the helmet, it was a total non-event in that I didn't think about my head at all. In addition, I'm able to wear a sweat band under the helmet without issue, compared to all my past helmets where just the few millimeters of cloth from the headband would cause the helmet to not fit again.
I do think the Evade is extremely over-priced for what it is, but it works for me. The only thing I don't like is that the front vents have no bug screen and on my first ride I could feel a bug crawling around in my hair, but nearly no helmets sold in the USA have bug screens, so I digress.