Not really. Revenues and Profits of Samsung group and Apple are roughly comparable and in many ways Samsung's revenue streams are more diversified and sustainable.. stock valuation notwithstanding.
"stock valuation notwithstanding" Perhaps you were thinking of Samsung Electronics, not Samsung Group.
There isn't really much outside Samsung Electronics in terms of revenue/profit.
Samsung SDS made $635 million in profit in 2019 which I think was higher than ARM? As far as I'm aware the 'Samsung Group' doesn't actually have all the companies under that so it's difficult to see what the overall revenue/profit is of the entire 'group'. It has quite a few other companies, like heavy industries, insurance, asset management, etc and I think they all have thousands of employees and are very large companies in their industries so I'd be surprised that when combined the other companies weren't significant. Did you have any data on this?
That is the key. There are and need to have alternatives. Real one.
Not the one to rule them all is the key to every innovation.