My point wasn't about the films quality or how well it was received. Rather that the studio could have made a straight sequel and focused on that(going forward) or the studio could have expanded into their full arsenal of novelty and 'universe' and such, and reaped the rewards.
Why would sony choose the former over the latter?
It's a misguided choice. The Spider-Man franchise doesn't have the kind of depth that makes 'expanding' viable or even interesting to audiences. The MCU is how big it wants to be because of all the wealth of material at Marvel's disposal. It also has the advantage that there's a genuine build up to the team up film. Same deal with WB and the MoS universe. Sony has Spider-Man and that's it. It's not the type of series you can build up to anything because there just isn't the depth there to make it worthwhile. When you take the focus off making good Spider-Man films in some misguided attempt at 'world building' you're never going to satisfy audiences, and eventually it will come back to bite you in the arse.