There is already SONM and BURST coin as competitors. The problem with Golem (and with sonm coming out soon) is that is still treated as a commodity and asset, not a supercomputer. There's no real network yet, nobody is downloading the Golem Software to provide his computational power. Did you download it? Probably not, there you go. Golem, like SONM is probably worthless. With BURST it is a lot different. There'a large network of people and it's growing day by day and is being used to calculate scientific projects etc.