"If I were Richard, I would be concerned about what features Oregano 3 might be able to bring to RISC OS if the release slips to the end of the year. Obviously there's a great deal more both NetSurf and Firefox could do from where they are now, but a lot will have changed by say, November (as an arbitrary date)"
"Will people still want/need Oregano3 if they feel that the open source browsers meet their requirements? Especially when they are free. I suspect many people will buy Oregano3 regardless, and have long since made up their mind to do so. "
That's going to be down to each individual user I guess. If the various open source browsers meet their needs then that's fine. Personally the only web browser I've ever paid money for is WebsterXL.
"Personally, I still have reservations about commerical RISC OS browser development. What do others think?"
If RISC OS was the only target market for a commercial browser then I would be worried about its continued development, especially with regards to keeping up to date with the big name browsers (IE, Mozilla, Opera).
As RISC OS isn't the target market for the vast majority of the code used to produce Oregano 3 then there is more chance that it will continue to be actively developed, and actually have a team of people working on it as their full time job.