So far Uniswap has received appreciation from Eth erc20 users,to exchange directly through their wallets, but over time many dapp companies that will compete with uniswap including moonDefi are building communities and attracting some users to try the live exchangevia dapp.
I don't think that many would like to jump to another exchange the same as Uniswap. There's more liquidity on that exchange and most traders who rely on it won't have time to transfer and use an exchange that is still on development and getting more liquidity.
Although Uniswap is also still in development.
Uniswap is more than enough for them all to trade, If they are jumping from the uniswap to the another similar service and that will be only putting their money into the big risk. it's not all of swap service can be trusted consider they will rely on the code that has been putting on the swap service.
I have seen people got scammed in another swap service. That should be enough to give them all a lot of lesson never try to use crap swap service if there's a legit one.