Which kinds of users benefit most from Saas?

When I posted the article "What does SaaS mean to you?", Stefaan Boel made the comment:

Would indeed be interesting for time to time users but I suggest also a maximum yearly payment. Imagine if you still use the license daily, would it cost you more?...

The amount of usage is an interesting ingredient to the SaaS equation. Andreas Müller of WIN-Verlag GmbH & Co.KG recently asked me:

Which kinds of users benefit most from SaaS?

At first I envisioned that the hardcore users are heads down with their applications day in and day out. As such these people have honed processes with lots of customizations that boost their productivity. It seemed quite obvious that SaaS offers promise for the novice or occasional user. It also lends itself to processes where collaboration is necessary due to the connectedness of the internet. Any user involved in analysis, review, or approval of content may be interested in SaaS; however, now that I have thought about it some more, the hardcore user may benefit as well. We sell software that enables people to design. It is unfortunate that knowledge of video cards, multi-core processors, and much more is needed. SaaS can help even hardcore expert users do more design and less computer related tasks. So SaaS offers benefits to everyone.

Feel free to agree or disagree. Let us know at [email protected]. Mention if you consider yourself hardcore or novice. It will be fun to see which faction is more talkative.

Wondering if SaaS heps those most who help themselves is alive in the lab.