If this was not becoming so common from in-app purchases on phones, in games, and now in cars, it might be considered a real problem (/sarcasm)
The ‘purchase’ mechanism is almost funny, but not at all.
If you double click the shift panel twice and accidentally engage the auto-pilot in Model 3, @Tesla will automatically charge you $14,100 if you didn’t previously purchase auto-pilot. No password prompt. No CC challenge. Just $14K on the CC on file
As more products release more features in software that are enabled/disabled depending on what has been paid, this will probably become more common.
There are obviously issues needing to be addressed!