Edit: UMG, Sony Music Group, and Warner Music Group are 89, 93, and 65 years old respectively. So I guess it's noteworthy that it's a relatively young label?
Another way of saying '50 year old record label' is 'a record label that has been accumulating copyrighted material for 50 years'
That's not the most common pattern in tech acquisitions. The targets are usually either small and fairly new companies that provide some new tech or talent, or large and old companies that provide an established market (e.g. Compaq buying Digital, or AOL buying Time Warner).
I don't think any company in history ever said "I'd love to acquire that company, but I'll take a pass because it's been so successful that it managed to stay in business for so long. We definitely want none of that."
The earlier agreement had Apple Computer agreeing not to go into Music to avoid confusion.
Apple Records, as the label of the Beatles, was hardly an unknown company
https://en.wikipedia.org/wiki/List_of_mergers_and_acquisitio...