Here's a passage I found from cardano feed: “And to be clear, dapps are NOT limited to 1 transaction per block. By designing your service or application with multiple UTxOs, you can enforce more parallelism. This is inherent and – we believe – one of the advantages to eUTxO design as we have implemented it in #Plutus.
Up-and-coming Cardano DEX SundaeSwap set the record straight by saying the concurrency problem only affects protocols that allow multiple people access to the same UTxO.
But Cardano is capable of running multiple UTxOs, which nullifies the issue.”
How many UTxOs can Cardano run and how many will be needed in high traffic situations? I'm worried about whether this eutxo thing could affect scalability, but what do I know? I'm just a noob.