As with all softweare and IT really hard to make any predictions ... but there is a verry good point you raise here. Looking at the exicution power and developers folowing I would still say ETH is way ahead.

Also looking at the other codes I think it is a big +++ point that ETH made there own domain specific laungus which I think is based on proven languages. I think it would be a even bigger problem if writing in Javascript or C# wich it what Lisk and Stratis do.

The biggest problem we are now facing is that code is beeing used that is not fully tested see:

The ETHF sees this risk and it is prepearing for this and geather as much data as posible to educate the people working with Solidity. At the end I think there has to be a complete new launge in wich this contracts etc are made. So I think Stratis and Lisk will proborly use ETH Side chains when it comes done to big trasactions.

Pleas let me know waht you think?
Thank you.