> Bitcoin proved the ability to create a system of value using basically just cryptography and with a built-in reward system to incentivize the decentralization of the network
No, because micro transactions in games is a centralized system involving zero cryptography, usually powered by a centralized database by the game developer. Bitcoin is decentralized.
Barely, if at all. Technically it can be decentralized, but Bitcoin's design promotes centralization, and the result is that currently Bitcoin can be controlled by either two entities (AntPool and Foundry USA) or three (one of the former ones plus F2Pool and ViaBTC) - and it's not going to get better.