Why everyone forgot about technology and real working product?

Marketing is only a part of a product.
However, later or sooner you will need a product, which is work according to the "marketing promises".

You need to take care of:
- team: motivated, goal oriented and responsible
- concept
- MVP
- market tests and proof of concept
- UI/UX
- killer features
- optimization
- security of transactions
- why are you going to use the blockchain
- marketing strategy, which supposes to cover PR, promotion, product optimization, and flexibility
- hundreds of working hours, crunches and deadlines
- develop, test, improve, repeat

+ tons of other unpredictable events, which can have an influence(positive or negative).