Quote from bjw:
no he didn't
there wouldn't have been any time value to collect when opening this position a day before the dividend. there's no free lunch here, really. option prices adjust as much as they can without doing less than intrinsic, because everybody knows the div is coming. if you get assigned, which you likely will, you pay costs of getting into position in the first place (cost if the options aren't that liquid could be quite heavy) + commission.
the trick of betting on people not exercising is widely know. marketmakers, with a fraction of our comm costs, were writing & buying heavily already. yesterday's volume in the nov 47 was over 5k in contracts with an oi of 270 or so. the trick is simple: the mm exercise their own 5k, which is spread over all 5270 contracts by a lottery; even if people wouldn't have exercised here, which they did, the posters here would still have been extremely(!) unlikely to not get assigned and probably the marketmakers would have taken it all anyway.
Like I said, I did them for a credit, so yes I did make money. A whopping 9 cents after commish.
Not getting assigned would have produced a decent winner, but like bjw said, it would have been stupid not to exercise. When I used to do this in the 90's and 2k's is was around a 75 percent rate, but i can only imagine the efficiency right now.

Possibly enough to counter the fact that 70% of the time to expiration elapsed. In which case time value may go up, and I would collect the dividend.