The problem that I have with SaaS is that most companies pursuing it's business model fail at the value option. Take Freshbooks for instance - I started using their service 3 years ago for 9$ per month. This got bumped to 14$ per month. I now have to pay 20$ per month for the same service I got 3 years ago (very little has been added of value to me). I could have bought a stand alone invoicing solution for $100 once and been far better off (I'm now trying to find a good one).
SaaS is often a really crummy deal for the customer and we all know it.
Pre-SaaS most companies would have paid upfront for a piece of software (before knowing if it works for them) and then upgraded ever few years in any case. For multi-user software they would have needed to pay for servers, ops staff, etc. on an on-going basis in any case.
When companies are evaluating a SaaS solution versus a boxed solution price is not typically a major deciding factor.
Which is why no company will make very much money with the SaaS model...since we all know it is a crummy deal, we'd never support companies doing SaaS (or PaaS or IaaS). I remember a small startup Sales-something trying to do a CRM as SaaS a few years ago. I'm sure they are gone by now.
I'm not talking about large installs for big organizations - I was speaking directly to the value options for small organizations. Most SaaS are designed to funnel end customers into higher profit services for no real reason other then higher profit. Value wise it's not a good deal for the customer.
SaaS is not a fixed amount nor a fixed duration. This is custom software with no alternatives, so escaping the "lease" is going to be more costly than purchasing up front.
If I were the manager in the story, I would see the choice as
1) Pay $5,000 per year for 10 years (with substantial cost risk due to the lock-in with the sourcing company) and then have to pay $100,000-200,000 to replace the software or
2) Pay $50,000-100,000 up front without the lock-in of the sourcing company.
Since the OP says "power systems engineering" in a "government type organization", it is not surprising that the organization is not terribly price sensitive ($50,000-$100,000 is peanuts to the power industry) and the SaaS is only offering a lower yearly payment in exchange for a substantial amount of risk and a substantially higher total cost.
He's pitching the wrong angle for this company / industry.
2) is a write off ad usually need multi-level approval. There is still lock-in as switching provider usually end up in a time consuming operation.
But I agree that the saas pitch for this type of industry might not have been the right choice.
Software is meant to be used continuously forever and ever. I have some exchanges that I programmed that are 15 years old now - still working peacefully ( the benefit of using PICs - they last forever). The company is no longer in business but with a soldering gun they manage to keep them operational.
So the real question is not only why should I pay you, but what happens when your company goes the way of a cockroach treated with raid. And don't tell me you are market leader - we see them raise and fall 5 times in a decade.
People have a hard time putting value on what they cannot touch.