I guess ethereum platform is very easy to launch a project compare to other platform if that is what you mean,ethereum has made it easy for anyone to launch a project at any time.
That's not true, for example waves is much more easier than Ethereum and even cheap. The main point why most projects pick up Etheuem over the others is because of its popularity, reputation without forgetting there was a big hype that ethereum could end up superpass bitcoin in some point in future which is unlikely to happen now.
Ethereum has really gained great popularity, and it is more popular than the same Waves, but this is not casual, and I think this is well deserved. the only problem is that many projects accepted ETH when conducting an ICO, now some of them sell eth , which affects the price reduction.