Many companies are late to adoption due to their vital connection to the global financial system, which is largely fighting the spread of Bitcoin culture that will eliminate all its influence. It is not easy at all to get rid of a global system in which everyone works and replace it with a system used by a few. I think this is one of the most important reasons that encourages enthusiasts like Elon Musk and others to abandon Bitcoin in favor of other assets because he cannot use it in the market practically.
It is very important to realize that despite the delay in widespread adoption for the reasons we have explained, the degree of adoption that Bitcoin has currently reached is considered very important and very high compared to the time it took. Bitcoin is literally ageless because 10 or 12 years cannot make any currency used on a global scale as Bitcoin is today. Almost no other currency in history has enjoyed such success in such a short time as Bitcoin. This can be considered an amazing achievement. The journey is still long, and the day will certainly come when the use of Bitcoin becomes widespread, since it can no longer be bypassed or ignored.
I agree with everything you wrote! Many people still haven't embraced bitcoin because they are very much tied to traditional financial institutions. This can be seen in all areas. For example - gambling! Many companies still do not accept cryptocurrency. Other companies on the contrary are much more successful because they accept cryptocurrency and the number of their customers is much higher.