I remember clearly in the ‘80’s all the Texas and Oklahoma license plates in NH where former oil field laborers were seeking construction jobs here.
NH usually has a steady economy because it does not rely on any major resource other than the results of skilled workers and educational capital.
I know of two lumber brokers who came to work here in NH in 1984 & 1985 respectively. They were both previously working in the Houston area for Georgia Pacific. One continued to own a house in the Houston area for years. He had it rented because of the loss he would have taken if had sold it.
I do think this time around TX is much more diversified. My brother lives in Allen, TX. It is a suburb north of Dallas. He has been there for just over 10 years. He moved from the DC area. He said the expansion of new businesses on the north side of Dallas is impressive. None of them have a direct link to the energy industry. Many are companies that are RELOCATING to TX from other states in the country. Some of it may be tax advantages. Some may be right to work. Some may be the cost of living in relation to more expensive states/cities to live.
The other reason may be just Dallas central location. For example, the wholesale lumber industry has an annual convention that switches between Chicago, Vegas and Dallas. I prefer the Chicago site. However, it is easy to get a direct flight to Dallas/Fort Worth from almost any major city in the country. Plus there are direct flights from overseas.
If you recall, NH has benefitted from companies from Mass moving into NH just because the cost of living. I remember when Fidelity purchased the former Digital Equipment complex in Merrimack, NH. They moved 4000 jobs up here from downtown Boston. Every Mass employee that moved got a 5% raise just based on income tax. Then when you figure the cost of a house vs. Boston it was huge. I think the same thing has/is happening in TX.