[bakli]

1. Pinboard charges money for their product and eventually buys former free-product competitor Delicious.

2. Smugmug charges money for their product and eventually buys free-product competitor Flickr.

Charging customers for your service really does help you win in the long run.

Edit: Taken from this tweet - https://twitter.com/zachleat/status/987523973612298240

[vnglst]

I’ve paid for a Flickr Pro account for several years, it wasn’t a free-product to begin with.