This post seems a bit tongue-in-cheek, but if it's costing the OP more money than they'd like to spend on it, then it is a problem. Or maybe it's not.
I don't think what you were describing is a "problem" at all. And it looks like you don't view at it as a problem, either. Not sure why so many of the replies in this article are trying to interpret your post as some kind of call for help.
I hate the phrase "Data Hoarding" because the word hoarding has negative connotations that don't apply to collecting digital media. When you look at actual hoarders, their homes are disgusting, filled with trash, and not navigable. On the other hand, there are no negative effects of data "hoarding", besides maybe the cost of buying and powering hard drives. Most hobbies have monetary costs and don't carry negative connotations. It's no more of a problem than stamp collecting. We don't call people Stamp Hoarders.
It's one thing to be over budget for it, but the budget just may not be realistic for the project and cost expectations have to be adjusted or the project downscaled. That's not a problem really it's just a normal part of budgeting.
The problem comes in if OP were missing work to work on this thing, or neglecting personal relationships. Or so over budget it was putting them financially in the red, leading to risky loans to pay for or borrowing from friends/family or whatever else.
Problems are things that have real negative externalities, imo.