Combating piracy by lowering software prices?

SIIA’s Anti-piracy division 2007 year in review report lists the top pirated software titles. They include some of the most popular and used software in both the consumer and business space. If I exclude Adobe Creative Suite and AutoCAD, the software prices average out to $88 per user (using Google pricing searches- see below). I believe many these titles can remove themselves from this list by adopting a SaaS model. Given their price point and popularity I believe these vendors could see significant drop in piracy by lowering the dependence of revenue based on software installs and generating more their revenue from online subscriptions and services.  Vendors of higher value software (like EDA, CAE, and other specialized engineering software) have less of an opportunity to do this since their software must often operate offline and most of their functionally is in place with their client software. These vendors have and will continue to fight piracy with legal and software protection strategies.

2007 Software Titles Most Frequently Pirated By Companies 
Symantec Norton Anti-Virus  $20
Adobe Acrobat    $88
Symantec PC Anywhere  $199
Adobe PhotoShop   $289
Autodesk AutoCAD   $1,700
Adobe DreamWeaver  $298
Roxio Easy CD/DVD Creator $24
Roxio Toast Titanium   $49
Ipswitch WS_FTP   $89
Nero Ultra Edition   $89
McAfee Virus Scan   $65
McAfee Internet Security Suite $65
Intuit TurboTax   $40
Intuit Quicken Home & Business $60
Symantec Norton Ghost   $65
Adobe Creative Suite   $2,000

Average price Without Autodesk AutoCAD and Adobe Creative Suite = $88