A lot of application already running in Ethereum. Ethereum network is getting heavy.
You mean all the kitties? One this I don't actually understand is, do all the projects with ERC-20 tokens use Ethereum network for confirming transactions? If so, the more companies the more transactions altogether, the worse congestion will become
No?
Ethereum network can process 15tx/s, I doubt that all the ERC-20 tokens start requiring more than that. Plus, Casper will be deployed soon.
Actually, Ethereum network is improving constantly. On the other hand, lots of new things using the network more than before. I hope Ethereum network will win this race.