1) "crapware" is not well-defined for all users, some utility that absolutely is annoying and unnecessary to medium to advanced users may be found useful by complete novices, e.g. the prototypical "your grandma".
2) The bigger cause is, of course, affiliate money. Companies have little backlash to crapware other than perhaps some lost sales due to disgruntled users. That's hard to quantify. The money you get from an affiliate whose crapware you preinstall is absolutely easy to quantify, though. This is definitely the mode of operation for cell phone companies. My Verizon phone comes with NFL apps and other crap that I can't even uninstall.
3) In lost cases, though, it's the companies own additional software that is the crapware. Again, the cause is money, the tracking and/or usage data is worth a lot of money.
Unless there is a big punishment, large enough to really hurt these huge companies, the status quo will continue. That's why this particular lawsuit is so important.