Kia and Hyundai have some decent EV offerings now that would compete with the Model 3, but they can't get the batteries made due to supply issues so they're only selling small amounts of them. e.g. Kia e-Niro got 'car of the year' in What Car magazine but they've only got 900 for the whole of the UK this year. So one thing Tesla has done right is build a huge battery factory.