The ecosystem from Polygon Matic is already a lot and in fact almost all the coins on Coinmarketcap that have a good reputation (which passed the Certik audit) are in the ecosystem of Polygon Matic, perhaps by cross-chain or bridge.
For example , Solana has a coin that is on its own blockchain and this Solana is the parent for all the coins of its token like Serum , Raydium , Solanium etc . But Solana is also available on the Matic blockchain and this allows for easy arbitrage of Cross-Chain results.