SaaS pricing works best on business products that provide value consistently &amp; you need to know support exists.  Very few of the things I pay recurring for are for software that I use recreationally - they provide value every day (office, google apps &#x2F; email, hosting, etc).  The products you mentioned (adobe) is still hosted.  Customer backlash today is worth dealing with long-term viability &amp; profit.  Companies that start as a SaaS will not have the backlash problem.