You'd think that the merits of your product would be enough to carry your sales, but in practice, sales is primarily driven by your network, which involves getting close to as many people as possible. Turns out, it's easier to do that over golf than via formal meetings.
Most of the shit from the now-ancient Official Preppy Handbook is still basically true, in fact, as far as I can tell.
The tech version of "where to meet people to make connections" is probably rock climbing gyms, right now. That'd be for barely-rich new money people connected to tech, or for programmers if you're looking to hire. Every group has their in-crowd preferences.
Try selling your CRM to the VP of Sales of a regional retailer who lives in Phoenix and NOT take him out to play golf.