One thing I've mentioned before is that even if they do, it's not the end of the world. Like the hotel construction project here which found the remains of a viking longhouse while excavating. They just modified the plans to include a basement, so that excavation of the archaeological site could continue at its leisure while they built above. The area underneath eventually opened as an in-situ museum.
If I get your drift, if excavations uncover a mastodon or dinosaur, museum entrance fees could represent a lucrative new source of revenue?
Absolutely they can.
Just recently visited Seville Spain as a tourist. One of the tourist attractions is the mushroom structure, during construction they discovered remains of a Roman city. So they excavated it and made it another tourist attraction. Now you have to pay 10 euros to visit the mushroom and another 15 euros to visit the Roman city.
Hey, Tesla can use it as additional source of cash