Yea, they will invest $1 billion to re-invent the wheel.... Bitcoin will always be the first use case for this technology and these other private permissioned ledgers that are in development will always be a
copy of the old legacy systems they have in place now. The leaders in this field, will run with Bitcoin and have working solutions on the table by the time the rest of them have finalized their systems. We
already have a tested system in place now.... no need to spend $1 billion to re-invent the wheel.