There is a large discrepency between merchants that accept on-chain vs Lightning vs Liquid, etc are in practice very different even though they are all Bitcoin.
The last two are extremely small and don't share the adoption of on-chain Bitcoin. Monero has arguably more adoption than Lightning, and definitely more than Liquid.
There are merchants accepting Liquid? I have encountered it by mention of some Lightning Network node operators, but I haven't seen it being used for anything else
Yea that's my point, I'm sure there are a couple, I see Lightning somewhat often, but none that I know of for Liquid.
On the same topic, Shopinbit just released there latest payment stats:
My point is that a sidechain would have to start merchant adoption all over again from scatch. Compared to the last two attempts seems like a very tough uphill battle to get over the already existing network effect of the already existing privacy coin (Monero).
