I actually overlap with SquareSpace on non branded terms in some areas and helped lead the search group at a top search agency in my last job. Not tooting my horn, just sharing my credentials since these threads inevitably have lots of uninformed rants and assumptions.
Many brands could see a lift from bidding on brand terms not just in click volume from covering more of the SERPs but particularly conversion rates from controlling one of the most prominent placements of your brand online.
Ad extensions can do wonders for many, and Google didn't fully let you control messaging for your homepage like you can with brand term ads.
Beyond that there are a few other really compelling reasons that make it a no brainer in many cases.
- Control the landing page URL, particularly for setting parameters or a/b testing
- Controlling site link messaging and URLs to help searchers self select a more relevant experience, particularly if you have multiple audiences
- Potentially a slight boost to account level quality score (I've seen mixed data on this)
- I don't see this mentioned enough, but you can get solid organic query volume data in AdWords now
- Super valuable insight into the raw queries. Are people searching for "your brand vs new competitor brand?" Are they searching around some horrible PR that you were unaware of? Maybe they are looking to see if you sell a product and if you don't you should consider it. With secure search everywhere now, this is arguably one of your best data sources for these sorts of insights
For the pennies per click you pay it is absolutely worth it in many cases. If you have doubts, Google just released their data driven attribution model in AdWords, which, among others, can help inform whether you are giving too much credit to them (although this can be hard to actually determine).
For most companies I'd fully educate on the pros and cons and recommend trying them before making uninformed assumptions. At this point, I typically default to enabling them fwiw.