I'm actually on the opposite side of this. I wish there were more metered options available for data, especially for wireless options. I'd love to see an offering that has a low monthly connection fee (i.e. $1-5), along with a sensible price per GB option (i.e. double the cost of transit so there are decent margins on this, but isn't something crazy like $10/gb).

Assuming that for most consumers the end price averages to be the same, the benefit of metered is it puts an incentive on the data provider to make their speeds as high as possible. Higher speeds will result in more bandwidth usage (i.e. Youtube/Netflix will default to a higher data rate), which will result in more profit for the company. The desires of the customer and the desires of the provider are the same - faster and more stable internet leads to better customer experience and more profit.

One of the issues I see with fixed-speed-unlimited-data options is that providers are incentivized to oversell the fixed speed bandwidth, leading to "up to 100mbps" type connections where it's a theoretical max, not the average. Under this model the desires of the customer are misaligned with the desires of the provider. The provider wants the customer to use as little data as possible - the less they use the more they can sell plans on the same infrastructure. This can be addressed with rules and regulations, but I prefer a situation where I know both the customer and provider have aligned desires.