Ethereum has potential still, but with Bitcoin's RSK smart contracts, is it possible for them to overtake us?
I don't think so.
Normally, the first to introduce concept on big level takes over the market.
Take the example of Bitcoin. After launch of Bitcoin in 2009 , many currencies were introduced which were better (in my opinion) like Ethereum. But none of them have been able to suppress the dominance of Bitcoin. Bitcoin dominance remains > 80 %.
There are already many smart contacts on Ethereum. As the smart contacts progress, Ethereum also progresses.
Generally, we tend to follow the crowd.
Since many are using Bitcoin as cryptocurrency, we use it. And since, many successful smart contacts have been launched on Ethereum, so we tend to use Ethereum smart contact.
Additionally, Vitalik himself helps out establishment many smart contacts.
So, don't worry. Bitcoin RSK Smart Contacts are very behind that of Ethereum.