[0] - https://en.bitcoin.it/wiki/Alternative_chain#Objective
[0] - https://en.bitcoin.it/wiki/Alternative_chain#Objective
However, the vast majority of bitcoin blockchain "bloat" is from standard bitcoin transactions.
Financial and accounting data has always contained more than just integer values of credit and debit. Who, how, when and why are just as important to good bookkeeping as to what was transacted.
Blockstore, by creating transferable digital property in the form of a key/value store, creates an economic incentive to use Bitcoin. Right now, Bitcoin needs all the help it can get. Consumer adoption will not happen if Bitcoin is just trying to be a public ledger of integer values that attempts to compete with MasterCard and Western Union.
Thus you can expect continuing push-and-pull negotiations, perhaps requiring a separate system of continued payments, if you really want indefinite, reliable, unalterable storage.