@james-show Did you read arhag's post? There is a monetization plan. The plan is selling access to the network. That will cost significant money in the future, assuming the network is successful and desirable to access, and many people want to access it.
That doesn't make SP a good investment at current prices, but if you really wanted to know you would have to work out models of number of future users, how much their implied payments would be, and then discount back to the present. That's a valid way of doing analysis, not "No Monetization Plan! Stay Away!"