Usually there is a compromise somewhere though. If they could just add all the features without any downsides, they surely would (and demand a premium for it). Granted, sometimes it is just cheaper to get rid of it (and thus make more profit), but sometimes its just a decision to cater to a minority or provide a benefit for the majority of users.
You don’t need power storage for months, if you combine different renewable sources and have power lines connecting different areas. Wind and solar complement each other usually.
You need to be able to bridge a few weeks though, because there will be gaps, but you don’t need to store solar power for half a year to make it. It is still a big issue, but no need to exaggerate.