I think that there is a big difference between what was essential 20 years ago and what is essential now. Because so many societies now have integrated the internet into day to day life, it is a basic, IMO. It might not have been the case 10 or 15 years ago.
Sure, you won't die if you don't have internet and a computer, but your quality of life will be diminished more than if you didn't have the latest fashion or a new high end motor (or any motor for that matter, at least in urban places).
I lived a few years on the very basics of life. I didn't have cable, a computer, a phone, or even a DVD or video player. I had a little 13 inch colour TV and rabbit ears (and when that broke, I had a 5 inch black and white TV I bought for $7 at Walgreens). However, I actually thought at the time I was going without the basics. I knew I was. I wasn't happy, and I found it even more difficult to get myself out of the situation I was in when I became cut off from almost all sides.
I did learn to find contentment in things that others didn't. I also think I carried this attitude a bit into where I am now. However, don't be fooled to think that in a tech based society that people can do happily without technology unless they planned to drop out of society. It's not impossible for those without means to find a job, education, whatever, but I think there's something a bit weird to have so much information at our fingertips, to easily look up things, access opportunities, etc., and then say it's not a basic need in the modern world. Someday I wouldn't mind dropping out with my husband, buying some land, etc (that old dream), but the one thing I would consider staying on the grid for would be internet.
I hope I am not coming off as harsh with it. I will try to give you an example of a different form of technology that has become more essential: mobiles. Back when I had no phone, I could rely on payphones and an hour's worth of library internet time (if I was lucky). If there was an emergency with my family, however, people couldn't contact me. Within a few years time, all the payphones were taken out. So, even as my situation improved and I eventually got a landline, etc, I was at a disadvantage in public. I had no mobile. I couldn't call a cab if I needed one from many places. If I was injured or attacked outside my home and a few places that still had payphones, I would have to rely on someone else calling the police. I didn't want a mobile (in some ways I am a bit of a Luddite), but I got one. Sure, I wouldn't have dropped dead from not having one, but I didn't live in 1981 where there were no mobiles and lots of payphones. Mobiles have become more of a basic, although I would say that on the lists of priorities, it falls below computers with internet access.
As for going dial-up, it's more expensive here than broadband, and even in the States, it can be more expensive. When I switched to cable internet in the States, I actually paid less than the last dial up account I had.
But, yeah, as much as I love travel, I wouldn't call foreign or even domestic holidays a basic. I guess that much I can agree upon.