You’re probably atypical. I don’t use any of these services much and am not very price sensitive especially given that it’s almost exclusively for business travel. But I’m guessing a lot of people using these services care a lot about 2x differences in price.
It needs to be because they're the new(er) player. There's a vast difference in attracting customers between "costs the same, but it's neater" and "it's neater and cheaper!".