Reading more details I wonder why Sony is doing this?
According to the Disney/Sony press release
Sony is receiving no money outright,
They will receive no money or box office gross for any appearances of Spiderman in MCU films i.e Avengers films.
They will receive no money from merchandising that includes Spiderman as part of a team.
The only way Sony receives money is the gross of solo films that feature no MCU characters not even 5 second cameo's and solo Spiderman merchandise both of which they already get.
It's not like the ASM Spiderman films aren't profitable there both in the top 10 highest grossing Marvel films along with the original trilogy and last year's X-Men.
I could understand if all the MCU films after the avengers were making $1 billion+ but only IM3 did that ASM2 made more than Thor 2 and only a tiny bit less than CA:WS and 9% less than GotG the 2nd highest grossing film in the USA in 2014.
