the success of the MATIC token depends on the polygon network, namely the involvement of users, and also the involvement of new ones, I can say from myself that the network showed itself perfectly, I don't remember any failures and Matic will grow with the growth of the number of users of the polygon network.
As long as it's still very cheap and easy, Matic users will always increase and they will all be happy to use Polygon for the things they need, especially in terms of transaction costs, it's also super cheap compared to others, so no one else who want to stay away from Matic I think.
ETH is very expensive network for long time so which is can't afford most of the users specifically small investors. So they are try to find a alternative network where they feel very comfort as like MATIC is really did implemented a successful own network which is provided too lower transaction fees instead of Etherum.