What is the max supply of Marinade staked SOL?

Could you please elaborate on the maximum supply of Marinade staked SOL? I'm curious to understand the limitations, if any, in terms of the total amount of SOL that can be staked on the Marinade platform. Does Marinade have a set ceiling for the total supply of SOL that can be locked up for staking purposes? Additionally, are there any mechanisms or factors that could potentially affect this maximum supply, such as changes in the protocol or community governance? Your insights into this matter would be greatly appreciated.