A Hive at 100$ would be very interesting. How would the Hive Power system work? Since it would be much more complicated to get it, I think it would be impossible for new users to create an account and expect to do a lot of actions on chain.
Maybe delegations will become as coveted as scholarships were in Axie Infinity? It would be interesting to see how the chain would work by that time :P
I believe Howo has been working on Resource Credit delegations. Once it is ready it will be implemented in the new hard fork and should solve some of these issues. You won't need to delegate Hive Power to players or participants, but instead just delegate Resource Credits so they can easily interact with the blockchain. This will make it a lot cheaper to be on Hive. You won't need to buy Hive and build Hive Power, you will just get free RC delegation from apps or communities or lease them for small fee.