I've been thinking, why do new tools or tech stacks excite everyone. I mean you can build the best thing and if you can't market properly or understand sales and how to sell your product it's of no use. I had this AI for real estate idea built on n8n and Vapi and have since shut myself away from tool news (e.g. Claude code) to help me concentrate on knowing how to actually SELL what i have. do i have a wrong idea here?