They make money on blade replacement cartridges. If the base unit lasts longer they still make more money in the long run from consumables. A lot like electric toothbrushes.

Source: I have this shaver and buy replacement blades a few times a year.

It’s a little off the beaten path.

We’re evolving past the need for reading and writing, haven’t you heard? https://youtu.be/6wCml0g2mRE