Screen displays, networking hardware, RAM, hard drives and most other components follow the same or similar laws, not only in density but sometimes also cost and speed. Maybe that's because they all contain ICs. Want a 5MB hard drive for $3000? (That was the typical 1985 price) I didn't think so, especially when 5TB drives (1 million times the capacity) with faster performance, lower energy use and superior speed for $300 are not far off. How about a 80x25 character monochrome CRT display for $800 or a 14" LCD for $3000? Maybe a 300 BAUD modem, 64KB of RAM or a 320x200 video card with 16KB of video RAM for $600 is more to your liking. Didn't think so either. Those darned ICs get into everything, even toasters, phones, TVs and cars. As for Apple's cost for an iPad, IMHO that's the real BS. It probably includes a lot of hidden costs and fees that are totally unrelated to the true cost of the hardware. As for batteries, they may not follow More's law but who heard of a Lithium Ion cell in 1975?