why not? it's about ~9B in 2016, ~11 in 2017, ~19B in 2018 and ~10B in the first six months of 2019, with the last quarter being the largest in the past. Sure,

why not? it's about ~9B in 2016, ~11 in 2017, ~19B in 2018 and ~10B in the first six months of 2019, with the last quarter being the largest in the past. Sure, it's less than the ad business but it's doubled in 3 years, surely that's a healthy rate of growth?