Nice. Usually, DAG-based cryptocurrencies have the capacity required to handle a large mass of transactions per second. This is probably because, they don't rely on either PoW or PoS for consensus. This new Helios Protocol implements Sharding and other technologies which aim to boost scalability at a greater rate than other crypto projects. If the project delivers as promised, then we might be seeing Infinite Scalability become a reality these days.
Of course, this would bring centralization issues, but for mainstream businesses and corporations, it's ideal. Another DAG-based cryptocurrency that aims to be infinitely scalable is Hedera Hashgraph. It's so similar to other alternatives such as Nano and IOTA. Things aside, with all the available technologies and recent innovations, it's hoped that Blockchain would go to the next level. Hence, Infinite scalability will be possible one way or the other. Just my thoughts