Amazon apparently did this deal to beef up its content offerings so that its content menu would be more in line, size-wise, with its subscriber base. So, why is achieving “content tonnage” important in the big leagues of subscription streaming? Because even though a streaming service such as Amazon Prime, Netflix or Disney+ might seem as if they have more than enough content, the truth is, there is never really enough. The solution is to always be adding more.
Source: TVBlog: Trying To Make Sense Of Amazon’s Big MGM Content Buy