There reality of current equity valuations is such that, if sustained, there is some some pretty savage consolidation to come. The only limit is antitrust, or fear of. $9bn is 0.5% of AMZN's current market cap, so $9bn represents a daily price fluctuation. They also have $45bn in cash reserves, so amazon could buy 5 MGMs without borrowing or issuing stock. That's not even a lot! Apple, Google & FB have $200bn, $140bn…
Amazon always has and continues to invest internally to expand e.g., new AWS regions, warehouse automation through robotics most of which are extremely capital intensive. Though your observation is right that MGM acquisition does make sense for Amazon because they OK to pay a premium to fast-track expanding their media business. The way I see it, Amazon, as a growth machine, keeps its growth options (organic/inorgani…
2021 Amazon has AWS, which is hugely cash generative... hence the growing cash balance. They can't invest faster than it accumulates. Financially, they're like Apple, Google, Etc. now.
Also, "capital intensive" is relative. Warehouse's investment numbers tend to be publicized, because politics. A big one is $200m, and that's a "media story" number which may be higher than the real, "capital investment" amount.
Company valuations are one thing, but $10bn is a lot of capital. It's hard to actually invest that much. That's why the big software companies have so much of the damn stuff.