that is kind of disingenuous.
when i was pricing both the full package of xenforo was
$195 + $60 + $70 + 70 = $395
renew = $100
ipb was $499
renew = $199
you get more with ipb like a calendar a social groups and something called pages that if you learn it you can create your own interface to relational databases that you create and something called commerce.
if you add paid plug ins from others to get the same ability in xenforo the price is very close if not better for ipb.
i went with xenforo because i got it and several plug ins for $25.
i was told to avoid vb like you would with the latter letter being two letters farther down the alphabet.
Pages are okay as a basic relational database, but it is not really worth using once you start needing to get complex.
Your argument about raising the price of XenForo is also quite disingenuous, because the value proposition of certain add-ons on XenForo offer better functionality than IPB. UBS is by far better than IP.Blogs; DragonByte Tech eCommerce is a better product than commerce, as it still offers physical goods; Ozzy's badge add-on is better than awards on IPB (and is free).
I cannot speak of current status of IPB, as I have not used them since they screwed me over on perpetual licenses, but generally XenForo has had a better value proposition for add-ons, and generally of higher quality.
I also have more trust in XenForo than I do with IPB, primarily because of choices and actions of IPB historically. Even though communication generally sucks, XenForo is more transparent about changes they are making whereas IPB will make decisions and do them without warning. Other than the occasional pushback from developers when people overstep (and Brogan who is the embodiment of sarcasm), the staff here are generally
much better than on IPB.
You pick platforms on what the platform offers, and what you need. If you do not need things IPB has, XenForo is the better platform (especially if you're doing custom development). If you just need functionality IPB offers, then use IPB; if the features are available as add-ons on XF, and you can afford it, XF is still generally better.