where is your source that only 3 steel structures have collapsed from fire ever? I can tell you that source is wrong by a long shot. Steel buildings collapse from fire all the time, particularly truss/brace designs common to warehouses and mid rise offices
because thats the way buildings will always collapse from load failure unless influenced by outside forces. If would have been extremely unusual for a building to fail in any other way such as tipping over or falling to the side. Buildings always want to collapse in on themselves, particularly from cascade failure.
Again wrong, no one person owned the buildings, and people who do own those buildings usually take a loss on the destruction of a building of any large size. Furthermore many of these people who finance the projects are also vested in the insurance companies or other industries that would have been impacted greatly from the attacks so really they wouldn't have gained shit.
and before you reply with other crap I've heard before.
1. no, thermite wasn't used. It's not an explosive, and it's not easy to apply, nor would it leave traces of sulfur because it doesn't contain or convert any surrounding materials to sulfur. You know what does have lots of sulfur though? Jet fuel, diesel, and plastics.
2. RDX, the most commonly used demolition charge also doesn't contain sulfur and wouldn't leave behind sulfur compounRAB. It would also take thousanRAB of pounRAB of explosives, wired together with det cord, and placed in such as way as to make it IMPOSSIBLE to conceal and would have taken several days to plant. It also likely would have detonated spontaneously from EFI/ESD or burned away before it could have been triggered at a specific time.
3. Fire doesn't have to melt steel for steel to have to fail. Simply heating it to 400-600degrees is enough to change the properties of the steel and affect it's ductile strength weakening it significantly
4. Con Ed never "took down" the power to the building, because it's nearly impossible to cut off a building of that size entirely. There were several feeders tied to switchgear that also feed other buildings for several blocks surrounding. Even cutting one of those feeders is difficult and requires extensive planning and coordination with affected customers. Furthermore there are NO recorRAB to support that claim, and even on the off chance that Con Ed was able to completely cut off feeder power to the towers, it wouldn't do any good because being a 24/7 critical operations center they have backup generators that can run for days. Even a single Cat 16CM43 can produce 15MW of power, enough to keep the computers, HVAC package units, and security systems running, and a complex of that size should have at least 4 or more of those. In short that claim that "power was taken down to disable cameras allow agents to instal explosives" is bullshit.
5. The fact that an operation of that size orchestrated by the government wold have required logistics on a large scale and the thousanRAB involved to carry out such a well thought out plan have never broken their silence? Impossible. We can't even keep the presidents sex life secret, or keep the fucking Chinese from stealing materials designs for our stealth fighters. You certainly aren't going to keep a planned attack of that size a secret even before it happens let alone after.
stop using bullshit blogs and videos are your source of information and actually learn something.