It depends. While Blockchain.com definitely has a big name and a good reputation, it still completely depends if it can outcompete Binance and Coinbase.

Taking a look at the article, it doesn't look like Binance is actually the competition, probably Coinbase, Kraken and Gemini because it looks like "The PIT" is going to be an exchange that would tightly follow regulations. Hence it wouldn't beat Binance in terms of the number of coins and tokens available.

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EDIT: Wait what. It's already going online in 6 days: https://pit.blockchain.com/trade