Although it is too soon to say if either will be detrimental to each other. EOS is yet to be introduced, while Ethereum is a constant work in progress, learning from Bitcoin and its shortcomings. Our experience in Blockbasis is that powerful networks and technologies like Ethereum and EOS can not only survive but thrive with each other. Both projects bring many solutions for innovators to build on top of and that is something the world of cryptocurrency needs. Without innovation and uphill battles, there can be no improvement!