Bitcoin would likely be for more affluent enjoying the "reality" in their enclaves/citadels, and the majority would live using doge, shib, mana (or name some other s-coin example) in the virtual worlds (apart from the time spent on dreadful "work" in Amazon warehouses, Walmart, etc.)
Bitcoin is quite usable for casual commerce at $1m/coin with L2 like Lightning. But that will start to have trouble at $100m/coin. But Bitcoin can adapt. I foresee a (soft/hard) fork for sub-sat values coming in the near future.
Lightning ALREADY does milli-sats. I agree a fork is likely, but even if Bitcoin never did add further digits past the dot, lightning will have evolved to the point that channel management is so automatic that court channel would clear the millisats to somewhere else, like another channel, before closing.