That means that no one who sells hamburgers will ever be successful because McDonalds exists.
It should go without saying that expected marketshare in the GPU and fast food industries are entirely different.
It is expected and normal for fast food chains to have only a fraction of the marketshare. This is because there are many competitors, a broad range of tastes and preferences, the market is easy to enter thus enabling competition, and logistical / staffing / property challenges of the industry, etc. It's extremely hard for any fast food business to capture a significant portion of the market because that means having property in a significant number of locales around the entire world, retaining and training employees, organizing logistics, maintaining consistency, ect.
As a result, in the case of the fast food industry, expectations for marketshare are completely different than the GPU market. Your McDonalds example thus makes little sense because you are trying to treat the fast food industry like the GPU industry when the two could not be more different. It's a heck of a lot easier to ship GPUs around the world than it is to have fast food locations everywhere. Not even remotely comparable on so many fronts.
No, success is measured in profit (which unfortunately, isn't one of the greatest forte of the Radeon brand, either). Market share has nothing to do with it.
Easily disproven by Walmart and Amazon's rise to power. Both lost money during the years they were expanding marketshare and didn't start seeing profitability until much later. Despite that, investors didn't seem to have issues throwing money at them.
There are many ways to measure success, profit is one of them and so is marketshare. Some metrics are more important for certain markets than others. You can quibble over the details but you are dead wrong that profit is the only thing that matters. We haven't even thrown gross margin into the mix yet either.
Where is this bespoke thread crapping because I do not see it?
I mean, if you call them they shall come...