Why isn't there a movie about this horse?

Morning all,

I thought I knew a bit about things - but, I am afraid, I never heard the story in detail about this horse.

I saw this on BBC about war horses.

Frankly I am stunned that there hasn't been a major movie about this - of all the hero stories of Australia - to me - this is one of the greatest.

Have a great day all.

http://www.news.com.au/entertainmen...s/news-story/e1db9f692db5216676ac734dcb6041bc