Always good to read one of your in-depth article.
That's funny you are so invested in ETH that you say "we" when you speak about it ;)
I am also a big believer of ETH. Because there is sooo much work done on it right now. It has to pay somehow in the future.

Now, as you say, there are risks. Competition might be the biggest for me. But let's take the example of Bitcoin. As Bitcoin was the first coin, it managed to keep its advance a very long time before a concurrent gets close to it. The history of BTC worked for BTC itself.

I think it will be the same for ETH : even if its price does not reflect it currently, a very big amount of work have already been done. Competitors have a lot to do (in terms of investments, popularity, functionality...) before being a threat to ETH. Its history will serve ETH as well. At least for 1-2 years.
Then... who knows ?