TSMC is set to experience a revenue decline of as much as 16% sequentially in the first quarter of 2019, due to a further weakening demand for cryptocurrency mining ASICs and GPUs.

From this number drop of income related to mining is around 70%, but note that before latest iPhone chips manufacturing and on the top of bubble it had been much more. So crypto scam made by media had been used to add billions of dollars of victims money to allow at least one capitalist company to reach 7nm.

Crypto scam seems to be complex media scheme involving hundreds of media sources tightly coordinated that had been used to finance both Nvidia and AMD during hard times and fully pay for new products design and equipment, as well as force people to pay for TSMC necessary modernization. Another sort of people who paid for this are users of Apple products, another kind of marketing victims.

It'll be interesting to see how things will unwind as in coming years we can see biggest ever degradation and lack of any progress.