Ethereum cannot maneuver bitcoin easily. Bitcoin holds 50% of the market cap and ethereum did not though it was the second largest cryptocurrency. The popularity also of bitcoin than ethereum helps to boost its price.
A lot of speculations I've observed telling that ethereum will dethrone bitcoin but up to now, ethereum is just in the second place.
It will not be east for eth to do that and it will be a long way to go if it really can take the place. But I don't really think it can make it.
It will be long journey for ETH to surpass the status of bitcoins right now and Bitcoin is the first choice of the hodlers so no wonder that ETH will be just a shadow of BTC for long time running. But we never actually know the real score and status for long time running of crypto's since IF there's certain regulation on bitcoins and been banned on global use maybe ETH would step in for that matter.