I wonder if they're going to offer Basecamp with this model, and if so, how much is that going to cost? I imagine it would have to be in the thousands.
Well, purpose of Tada list was to act as a funnel to Basecamp: they took part of the functionality and when you needed more you check the Basecamp. I think they are going to with this strategy again: limited subset of Basecamp and when you need, say, mobile app or more features you know where to go.
is the imagine including the hosting? I could see that, and even higher if storage space got into the terabytes.
I myself could see 3-$500 and self host on my own hardware / vps - with options to pay for future upgrades that include new features if wanted.
I like basecamp, and would consider buying in that way, but there is more and more competition in the space that makes others attractive, and with the speed of changes with the others paying 24 months of service in advance doesn't make as much sense at it would in a smaller space. For me anyway.