Higher room price would also be just a temporary solution, and in addition, it would make the game even more grindy as it would take for us much more time to unlock each of them. And I'm sure it would test the people's patience quite a bit, if they had to spend even more time working with the laptop. Perhaps the possibility of further developing the rooms or adding some more new places in the basement would be a better way.
The game is full of additional potential, but a lot of people are still busy with the fact that there is no pause option, while the game can also be stopped with the gear icon..