They have an incredibly strong incentive which is to buy as many 28nm lithography machines as possible before the US forces ASML not to sell those as well! So they wanted to keep 7nm production secret for as long as possible, because the US operated on the incorrect assumption that blocking EUV sales was enough to stop SMIC from moving forwards.
If you look at the SMIC earnings report, you'll notice they added a new category called "28nm or less". That's their way of telling investors they have a money factory without telling the US to sanction them even more! Also, a very large part of SMIC >32% is owned by the Chinese state, and their profits have been skyrocketing in recent years.
If you look at the SMIC earnings report, you'll notice they added a new category called "28nm or less". That's their way of telling investors they have a money factory without telling the US to sanction them even more! Also, a very large part of SMIC >32% is owned by the Chinese state, and their profits have been skyrocketing in recent years.