In Brazil, This is known as the "plim-plim". They have been using the sound for many (30+) years. I don't see how this can be compared to the sound of a ringing phone.
For instance, If the price of imported electronics goes up (via an import tariff), this creates an opportunity for local electronics producers to benefit. The local cost of electronics increases, and the profit margins of local electronics producers increase. But the only people who have any increased expense are those who buy electronics.
Not working. We are getting the crappiest craps at 2-5x the US price. The Chinese components are only bolted on in Brazil. Almost not technology is developed on the process.
a) if you can't find the manual, you'll be forced to upgrade sooner (and, incumbant advantage here: if you have a Toshiba, you're probably more likely to pick Toshiba again)
Except that I can still find specs, drivers etc for the Infinia 7200 in Toshiba's website, a toshiba desktop...manufactured 15 years ago.
No amount of careful planning will ever replace dumb luck.