1) ads don't provide as much revenue as you may think they bring.
Ads pay very little. A very high CPM (cost per 1000 impressions) is about US$10. It's closer to $2-5 CPM. So that's less than 1 cent every view. Authors won't be making enough based on ads alone.
- from @/CKtalon
2) they don't give you free coins, but they give you free fast passes. you can get 3 free fast passes every day. compared to free coins, which on some days, you can only earn 15, the 3 fast passes can unlock the same-- and even more-- content, esp. if you're looking at longer, more expensive chapters
3) you can still at least read some with free fast passes. also, you can always read the free, not contracted, not translated novels. all locked novels usually provide 60-100 free chapters too. free reading is always possible.
4) coins have always expired since the beginning. they expire once 30 days pass. not 3 days. wn simply drops you a warning whenever it's the 3 day mark. if you want to avoid expiration, chapters you unlock never expire, so problem solved.
5) WN, at the end of the day, is a company. a business. they used to give out more free things, and they took away some of the free things. I fail to see how people are entitled to continue demanding these free things, since they were always free from the start. nobody ever paid any money for them, so they are not entitled to continue having them. as a business, WN has the right to revoke them at any time. it's not called being greedy. it's called trying to pay your authors, translators, editors, site developers, and the entire staff, as well as trying to get a profit, which is the whole point of running a business.