Yes. The implications for the semiconductor shortage is pretty stark. If things are going to be as bad in 2022 as some think then we will see some big effects in the next 12 months. To the point that I am wondering if it could trigger a global downturn or even recession. Companies will go to the wall as their cashflow won't support a sustained production outage. On the other hand, the industry is a crazy one - periods of supply followed by a sudden switch to oversupply with a whole set of other problems. I don't think anyone can say with any assurance what the next 12 months hold, but the consensus is continuing shortage which is still getting worse. Some production is relying on chips already in the market, but this is drying up rapidly.
Fabs are a huge investment - even large companies are betting big on each new facility. Cutting edge fabs are $10bn+. Intel reckon their new manufacturing hub in the US will have a total cost of between $80B-$160B. It should be noted that cutting edge isn't the only game in town. A lot of semi chips don't need the latest processes because the economies of scale don't work or the technology is unsuitable for the chip functionality. So it isn't necessarily just chasing the latest process node.
We don't need the government building fabs. We need to have the political and economic climate generated by government for the UK to be an attractive place for companies to invest the many billions required. One of the biggest and most advanced semiconductor manufacturers on the planet has just said that we haven't got this despite the UK being attractive for semiconductor investment in a number of other factors (eg. access to water, infrastructure, geology, academic excellence etc.). This should be a bit of a wake up call. It won't be, but it should.