Re: Software Testers
Agreed. There are issues which the Insiders flagged in volume from early releases which nonetheless ignored.
Most US software companies do a terrible job of testing non-US English language installs - developers and testers assume that US settings for keyboard, dates etc will apply for all English locales, when in fact it tends to be unique amongst the 15 or so in place)
Microsoft has historically been "least worst" in this respect, but has really gone backwards in respect of these settings for example, years of Windows 10 updates resetting English US for all users in UK, Canada, Australia, New Zealand, South Africa, Hong Kong, .... Office 365 barely pretends to respect non-US settings. It's not yet Google-bad or Facebook-bad, but it's headed in that direction. These companies do not encourage testers outside the US, so feedback is not heard.
A properly managed test team CAN make up for deficiencies in these areas, but if management has a mindset that doesn't allow it to cover "unknown unknowns" then it's started ceding the market to other players.