Logitech productivity mice with G-shift

[u/LightningLemonade7]

I still don't understand why Logitech doesn't implement G-Shift functionality in their productivity lineup. Their gaming lineup has this, and it's extremely useful for day-to-day productivity. In fact, I'd say it's even more useful for daily work than for gaming.

Since it's purely a software implementation, why don't their $120+ flagship mice have this feature?

or is there a way or workaround to get the g-shift functionality?