Realistically speaking the most likely future of D2R looks like this:
Blizzard does nothing because they don’t profit from doing work on D2R. 2-3 years from now even low/average PC specs will be capable of running 3, 5 or 8 D2R instances in parallel. D2R accounts are already fairly cheap, on sale 5+ accounts cost roughly what you pay for one new triple-A game. The playerbase is shrinking and the average D2R player already has a lot of experience. The future playerbase will be small consisting of highly skilled players min-maxing the crap out of the game. Every serious D2R player will use multiple accounts because it becomes more and more affordable both in terms of hardware and software (D2R accounts).
It was still interesting to have these conversations. It’s funny how dishonest some players are about already benefitting from the higher drop rates of /p7.
I haven’t played the original D2 (at least not seriously, I tried it on LAN with a few friends on normal difficulty) but AFAIK online alt accounts were free in that version of the game with volatile character slots (they were deleted after a few months of inactivity). As hardware became stronger (a few years after D2 release in 2000) experienced players probably started using multiple accounts for various benefits (increased drop rates being only one of the many).
Playing D2R with multiple accounts is already very common. Here is how I know:
There are many benefits to having multiple accounts (I mentioned a few in a previous post), here is one that can make trading easier and I have seen a lot of players doing it on traderie while trading higher quantities of crafting materials:
If you log in an account in a specific region (EU/NA/AS) that account can create games only in that region and can join games only in that region with gamename/password in the lobby. However, from the friend list your accounts can join games created in other regions (your accounts should obviously friend each other for convenience). You can log in all of your accounts in your region (for low latency) but use 2 accounts to have logins in the two other regions. Let’s say someone gives me a gamename/password on the Asia server. I use my “proxy” account that I logged in on the Asia server to join the game with gamename/password in lobby and then on my mule accounts (logged in on the EU servers) I use the friend list to join/follow my Asia proxy account. If someone enters your trade game with 2 or more characters then this technique is the likely reason.