Too Long; Didn't Read
The scalability of not only <a href="https://hackernoon.com/tagged/ethereum" target="_blank">Ethereum</a>, but basically every <a href="https://hackernoon.com/tagged/blockchain" target="_blank">blockchain</a> is a problem that nobody wanted to hear about and feared it till 2017, when the project Cryptokitties exponentially gathered popularity and started to slow down the network and got the prices of gas so high that everybody agreed that this should be the problem no.1.