The space is not the issue, nor is the server ware.
Any Linux machine can host, as can any windows machine using Xampp or equivalent.
Setup is easy, I have several hosts on my lan for various jobs.
The problem is linking the domain to an address.
Most ISPs use a form of DHCP, which means that while your IP address may be stable in the short term.
In the long term it can change without notice, and more than once after being stable.
Dynamic DNS, the solution to this problem, has issues of its own.
The second issue is that most home connections have port 80 hosting blocked, along with a list of other ports incoming.
This is done to prevent virus' using compromised home system,s for spam purposes, a problem that used to be common.
The third issue is upload bandwidth.
Cable, ISDN & DSL connections have very limited upload bandwidth.
Using that upload bandwidth restricts the ability to download.
The only people who have a prayer of doing this are those with symmetric connections like google fiber.
Even though they are tolerant, they will eventually say something, and other providers are non tolerant.
Fourth issue, almost universally, home hosting of content violates TOS.
The only way around this is to use bittorrent, which being a distributed system, edges into forced tolerance.
Which then brings up other issues, potentially legal ones.
Anyone connecting to your seed who is also connecting to or has an illegal seed, can implicate the host in illegal activity.
MPAA & Law enforcement have a sue/raid/arrest first, ask questions only if forced to mentality when bittorent is detected.
Which brings us back to a hosting provider.
Using one of them would also allow for the domain to be mapped to something like addons.celestia.space despite being hosted somewhere else.
This leaves open the idea of combining the two since many hosts, dreamhost in this case, offers unlimited domains on the account.
In this case if Celestia.space were moved and everything combined, as long as the forum didn't disrupt others on the shared server, costs would be very low over all.
It would also allow for subdomain hosting of addons & origins both, for the cost of a single domain.
Which could givehttp://www.celestia.spacehttp://addons.celestia.spacehttp://origins.celestia.space
For the same cost as http://www.celestia.space
As long all of the files are open, web linked from elsewhere on the domain, space is not an issue, & bandwidth is not an issue.
Just some random musings.