Why do you bother to ask this question anyway? Internet is not that too much to pay if you have one in your house. Even a simple working students can pay up the cost of the internet. It's unlikely that a broke could not pay their bills though but if your salary is above the average then you can make a living already. Not unless if your salary is below the minimum then you are broke af and you can't even continue to do your crypto job with that.
In some countries cost of mobile internet is still to high,so they prefer wired connection modem which is more cost effective but in most of the countries internet is getting more cheaper and more places offer free wifi at high speed.
along with the development of digital technology, have you ever thought about the internet costs that you use for your needs ...? where we always open the market every day and trade your cryptocurrency assets, let's calculate with your income, in one day whether you always explore exchanges, social media, upload, share and other sites, is it commensurate with your income or is it commensurate with the sale and purchase of your cryptocurrency assets ...? where every time we make a sale and purchase there will be a cost, and the time we spend does not count how many hours we live on our computer or smartphone and etc, ..?
When talking about internet's costs and income, let's talk about it's benefits too and whether they outweigh income or not. With internet you can have conversations with people, watch movies, download games, book hotel, check discounts and a lot of fun. In overall internet saves our time, gives us possibility to do a lot of job with little cost and from home without even going anywhere. When you want to buy fragrance for example, prices offered online are far beneficial than those ones in local stores, we save rental prices here and other costs. So the one answer to your question from business perspective can be that internet gives some business possibility to save tons of money and have store available for 24/7 (online).
Internet cost isn't huge at all, it's pretty cheap but still depends on the country where you live but I agree with that mobile data is expensive but people use flat internet most of the times because of no data restrictions and affordable price.
indeed the internet cuts our time and costs more, if we do online shopping, and indeed using a flat internet will definitely save our expenses, but not everyone has it, and in every country, has a benchmark price for 1GB per possible country where you live has cheap internet costs, just imagine if in 1GB of data connection for 1$ runs out in 3 days, or even less than 3 days if we are one of the few people who are active on social media or forums or always remain in exchange. upload video photos and play online games and even watch live streaming, we take the example if in 3 days we spend $ 1 on cellular data costs in 1 month we spend $10-20 only for the internet costs that we use. this calculation is just a simple example if we want to save our expenses.