Guess your own answer is spot on, it just depends.. I believe however that (right now) SharePoint Server and WSS are definitly not aimed at SMB or even IT savy one man/woman companies.
What I do want to add though is this, wordpress may suit your needs perfectly (and it may well be the best blogging platform around) but in an environment with 1200 potential blogs where TCO is important (and where management wants it's engineers focussing on their jobs not on installing wordpress) the SharePoint blog template or the My Site functionality wins hands down.