You’re being very generous to them by assuming it was technical in nature. They pivoted to AI very early and made Dia their only focus despite it being quite obvious that their user base had zero interest in it. They attempted AI in Arc and had a massive backlash, so instead of recognizing that, they just decided to create a new browser and focus solely on that instead of the incredible UI they had built. If they had gone to a subscription model just to continue developing Arc, I would have gladly paid for it. Instead, they are trying to charge $100/mo for a browser with a useless AI implementation. TBC is the perfect case study in ruining a great idea with bad AI implementation.