They should feel threatened. There's nothing particularly special or novel about what Repl.it is doing, also very little in the way of specialised knowledge req

They should feel threatened. There's nothing particularly special or novel about what Repl.it is doing, also very little in the way of specialised knowledge required to build a competitor (note that I'm not trying to belittle the individual involved here). That they got $20 million to pursue this product in some ways surprises me given the relatively low barrier to entry.