I'm putting it more as a US based company that has mostly US based clients (Robinhood) wanted to expand their crypto portfolio into more parts of the world and buying BitStamp is a move in that direction.
No doubt. Except last I knew, Robinhood absolutely sucked as a company and they let customers buy and sell cryptocurrencies like they were a bucket shop from many years past, i.e., people basically bet on whatever crypto they bought or sold but there was never actually any buying or selling going on. You weren't able to withdraw the crypto you bought, nor could you deposit any.
Is Robinhood still operating like that? I had an account once but abandoned it after they weren't able to provide me with a phone number to call in order to solve a problem, nor were they willing to call me.