That technology is dead. Abandoned by Microsoft... <g>
There are still quite a few people working foxISAPI and other CGI's. JVM is dead for MS too (or about to expire) - but products will continue to use js. Microsoft is not the market leader it hoped to be. MS decision on this or that - in reality - don't make the market shudder. To IT managers and vendors with a taste for the buffets in Redmond, however, it may be a big deal - but to real worlders - MS's pronouncements on what is hot and what is not - goes in one ear and out the other. IF MS don't have it - someone else will!

For exmaple, I am often amazed to see people here post elaborate questions on how to do FTP or SMTP mail and then re-writing everything when there is a bunch of free stuff available here (if you really must re-write) or full featured and supported tools that cost very little compared to the time that goes into writing from scratch. You'll see those same people asking 20 questions on how to make X work - that time alone probably cost more than a small purchase.
Sometimes it is just fun to figure these things out. Basic Yankee "tinkering" behavior would explain a lot of it.

Home grown foxISAPI apps
There are components of some kinds of projects that can be tested with fox-cgi. Sometimes business rules do more than set a filter and fetch a spread sheet for an HTML table!

There are content packaging and delivery systems that would be alien to many of us. For example - There is java based content specification (Shared Content Objects) - that responds to a client interaction through a cached XML "manifest" (DOM). The XML specifies permissions and navigation based on embedded "sequencing" and "control" rules. The rules are part of the content! The reads and writes (transactions) are minimal. The "rules" (business) object is something that can be developed in VFP and tested with CGI. Once that is completed - the frontend can be addressed.

Solutions are more than "simply" connectivity and front ends. Sometimes there are real business rules (as opposed to a filtered ordered list) and unusual content prioritys. I am sure listing to the browser interfaces are getting better and better - but sometimes - there is a little more to a project a table on a page!