They will build to a much higher standard than normal US residential construction, as they do with most commercial buildings. Many people do not understand the vast difference between residential construction quality and the quality that mega corps get. I personally watched Apple build their new campus in Austin (I have daily progress pictures of the construction site, I work there), everything is solid concrete. These buildings can withstand any type of hurricane.

Flooding is also something which can be mitigated: build foundations to be taller, work with the topography to avoid the path of water, and build drainage solutions. You should see the drainage field that Apple built for their campus in Austin, it's absolutely massive and can divert an incredible amount of water.

> Many people do not understand the vast difference between residential construction quality and the quality that mega corps get.

It’s not limited to mega corps. Commercial construction is built to a higher standard. Some times you can buy commercial grade hardware and materials for your house if you want.

Larger buildings are also more robust at the foundation because it needs to be so much stronger. That thick concrete is necessary, not a luxury.