I don’t think there is anything to quantify at-present.
I really don’t know what role SIPP plays. Their big investment was turned down, and the mayor of Victoria was the politician in Ottawa who thought she’d be taking home a funded project.
And the biggest question is why is only one of the two main economic nodes a member. Why is Langford opposed to SIPP?
IIRC, SIPP was the successor to a couple of earlier economic development groups that fell out of favour with politicians. The premise was that SIPP would be the ONE development organization for the region and would have Government, FN and private funders although it seems to me like the CoV is by far the largest donor.
In my opinion as an economic development org SIPP has been useless. Their own recognized accomplishments were U-Bike and a company that helped Brazilian staff get work permits in Canada that everyone pretended was a tech company. Smart cities failed due to its idiotic proposal and COAST is unlikely to fair any better now that it's #1 cheerleader (Helps) is gone and from what I understand even the local ocean tech companies wouldn't fund it.
Unlike it's predecessors, SIPP is good at two things and that is self promotion and supporting its benefactors. I doubt that SIPP could point to one tangible beneficial outcome from the millions of dollars it has received over the years but you would never know that from the heaps of praise and wonderful powerpoint presentations it produces.