I have a cloud storage by pCloud. the good is that you have a lifetime plan options .You pay once. I have 500GB. If I remember correctly, they have a plan for 2TB as well. If you need more, you can contact them and they will offer you a price
There is no file size limit for upload (but you should also make sure)
If your plan is to backup your porn on the cloud, then go for it. But if you plan on streaming it from the cloud then I woudn't recommend it necessarity. I tried it in the past, wasn't good enough, don't do it anymore