I still don't see that as lazy. When you are making a product on a budget & schedule, you try to stick closely to both. Otherwise you could end up with a losing gamble [a flop, or a Pyrrhic victory] that cost more than you were prepared to lose in either case. Consider a restaurateur who goes all out to please and impress... and does... but loses money on every plate of food served. You can't run a business like that. It probably costs Bethesda about a ½ a million a year just on the electric bill alone; (and then there is the rent, the other utilities, the technology costs, and the employee salaries, and/or wages... and insurance for the company and the employee medical benefits... and the PR events, which are likely scheduled in advance, and the game needs to be ready for them).
What you describe as laziness, could just be them finishing the game on time, and avoiding dumping another [couple!] million into it. This is not a bad thing; it's the mark of a well run company that will likely be around for a while. One can lament what they will about their beautiful shovel-ware, but I don't think it's the result of laziness.