OK, so I read the Daily Mail article. I think there are a couple of things going on here.

Firstly, hellofunk made a claim of "health care systems stretched to beyond 200% capacity". I asked where that number came from because it contradicted what I'd read. S/he's provided a source, which is this quote from the DM:

Another medic in northern Italy told a friend in the UK that hospitals were running at '200 per cent capacity' with operating theatres hurriedly converted into intensive care units.

So this is a snippet from a private conversation with a friend repeated on Twitter, and it grew in the telling ("at 200%" became "at over 200%"): it's not a formal claim by someone with all the data. It's a claim that's painting a picture of what it looks like inside a hospital where one person works.

Secondly the report I cited has this:

"Over three weeks, 1,135 people have needed intensive care in Lombardy, but the region has only 800 intensive care beds, according to Giacomo Grasselli ... Grasselli coordinates all the state-run intensive care units across Lombardy."

When I read this the first time I thought, OK, so then they've surely run out of beds and are turning away people they could save. Confusion followed when I read this:

Lombardy intensive care coordinator Grasselli said he believed that, so far, all patients with a reasonable chance of recovering and living an acceptable quality of life had been treated. But he added that this approach is under strain. “Previously, for some people we would have said, ‘let’s give them a chance for a few days.’ Now we have to be more stringent.”

The first quote doesn't actually say they've run out of beds. That would be true if everyone needed to stay 3 weeks. If the average recovery time is 14.7 days then 1135 people could be treated with 800 ICU beds without anyone being turned away, whilst being at full capacity.

In the DM article the anonymous doctor claims Lombardy's healthcare system is one of the best in the world (sometimes this is phrased as most efficient, which isn't quite the same thing: you'd expect a highly efficient healthcare system to run out of capacity earlier than a less efficient one, I suppose). The Reuters article says:

Intubating can be taxing on the body, especially for older patients, says Grasselli ... adding that he would never intubate his 84-year old father. Before the coronavirus broke, “we more often had the luxury to try to intubate patients who were at the limit,” said Mario Riccio, head of anaesthesiology at the Oglio Po hospital near Cremona. Now that’s changed.

So some of this notion of rationing of healthcare is that before, Lombardy could afford to try extreme and risky measures to extend every life even in cases where the likely outcome was severe damage to the body from the procedure. Now they can't afford to take such measures anymore.

Medical systems don't have a hard notion of capacity. Total capacity is flexible: when under stress doctors are forced to triage more aggressively and drop the most extreme treatments. It may not make sense to talk about running out of capacity in a world where medical systems can keep otherwise terminal patients alive indefinitely; there is always triage even in quiet times. I'm not sure how best to measure it but it may be unduly alarming to say Lombardy has run out of beds.