Not if you check the fundamentals on what a arbitrage is and the big price differences in BTC price. There is no free lunch because there is some more risk involved. But for me, the risk/reward ratio is good enough. It's online for several years now and is still paying me BTC. Oh and regarding cannabis, it' one of the worst asset classes to invest in now. Valuations are going nuts and de charts look horrible. Only (future) cannabis company I had a swing in was Pyxus (out now), P/E is still attractive but chart is not looking good. I made a article about cannabis for over a year ago wen it was attractive and out of the radar (I'm short Tilray now): https://steemit.com/investing/@unknowncrypto/smart-investment-buy-marijuana-stocks-today