It is an interesting question, I don't know of a service that allows investors control over their invested funds (it might even be illegal in some jurisdictions) but the most obvious answer is service...
Hmm interesting! So the Bitcoin Blockchain allows for all of that, including penalties for "early" pull out?
There's also the "token" angle, which is how this sort of crowdfunding would work on (say) Ethereum... Taking the scientific example specifically, it's what various DeSci DAO's use to issue "shares" in the associated IP...
I guess we don't have that in BTC, but then again I've always been skeptical of the idea of "tokenizing" State-based assets like IP to begin.
There's also the "token" angle, which is how this sort of crowdfunding would work on (say) Ethereum... Taking the scientific example specifically, it's what various DeSci DAO's use to issue "shares" in the associated IP...
I guess we don't have that in BTC, but then again I've always been skeptical of the idea of "tokenizing" State-based assets like IP to begin.