Its been a while...maybe a month since sent so it could bebetter now. I provide liquidity as a taker too and it can take weeks for me to be part of a collaborative transaction. The order book my service shows doesn't seem very reliable, as it frequently shows 0 which I know is not right, but when it does show numbers my jam service seems to see around 100 other people providing liquidity.
Discussion
anecdotally, i just pulled the order book successfully through JAM, there were 35 makers that my service sees. thats hopefully only makers my service can find, but pretty small if accurate.