Ideas aren't worth much. The real idea that Steve Jobs and Bill Gates had was that personal computers and software were compelling products that would have value to ordinary people.
I suggest you read the book "Hackers" by Stephen Levy (aside from probably giving more accurate insight into the origins of Microsoft and Apple, also includes timeshare, Unix, the free software movement, and IIRC Lisp Machines in its recounting, all in a lot less space than Isaacson's complete ballsup).
If it were up to me, I'd simply ask that markdown add support for h3 (other than hashes, e.g. Underline with hyphen and spaces) -- two levels of headings is all too frequently insufficient, inline links to images be rendered as image tags, inline links to videos etc. likewise become video tags, etc., the way other inline links become anchor links, and some form of table support be standardized.
Aside from that (and implementation bugs) I've been very happy with markdown.
There's a differenc between trying to maintain app store policies that strike a balance between security, end user interests, developer interests, profitability, etc. and intentionally putting bugs in your OS to break third party products, stealing third party products and building them into your OS, or bundling free products with your platform or office suite to drive third parties out of a market.