Once Intel will provide a competitive chip the anals will cry about margins though Intel will meet or exceed TSMC margins when it comes to mobile.
Basically it's OK for TSMC to have low margins when it comes to new business but it won't be OK for Intel - so how stupid can the market get?
BRCM and NVDA already stated the obvious:
20nm performance improvement compared to increasing cost is marginal. -
unless it's based on SOI and that train left the station because everybody copies Intel