We’ve never been able to understand why the more expensive hotels charge for wi-fi and the less expensive offer it free, especially when those same hotels are trying to attract business travelers, who want to get work done. The simple answer, of course, is that they can. Many business travelers are booking less expensive hotels, even if their employers will allow them to pay more. The estimate is 40% of hotels charge. In defense, with no more revenue for gauging people for telephone calls, they need a replacement.