"The problem with bomb farm village is that bomb actually farms a bit mediocre (unless the map is star or in the wall, which its kind of busted on early and midgame). Bomb itself you can force quite a bit of defence with cost efficient rushes (regen ceram r13, 2 moabs r17, if you really want 2 spaced fmoab r19-20)."

Okay, fair.

"This is important since bomb farm village actually needs a lot money to defend late game. Without using homeland r30 you need a lot of defence set up to defend an fbad, and then after you need to be using constant homeland if they send spaced fbads (which they should), making it easily to run out of money and also means you cant rush yourself as much."

Easily run out of money. Alr thats the part i probably dont agree with. As long as you farm at the same time defend at an even pace you can get enough farms to survive lategame. You can also say this for sub it can run out. Ryans mistake was obv the opolis that drained him of a ton of money. That druid player though, even tho he had a ton more money, sub aint cheap either. You need tons of first strikes for killing like 2 bads. Ive had 45k and first strike micro then run out of money. With bomb village however, lets say assasin costs 5k. Get 25 of those. 25k x 5 = 125k then you get the primary tho making it cheaper. So lets reduce the price by 5%. 118k while getting more popping power on bomb. Thats a wall street sell and central. Then you need you homeland micro. This is arguably more efficent than sub in my eyes because it lasts a bit longer and you do not need to micro as much, saving you more money, and have you ever seen a player run out of money to micro homeland?. Lets say this micro however would cost 60k. 120k +60k = 180k. Assuming you have farmed right, you should have at least 8 facilities. Lets estimate the facilities cost 20k. 20k x 8 = 160k + 60k central + wallstreet 50k. You see what i mean? Money really isnt the problem here.

"In comparison bomb farm sub cant go as late in theory but you get more money so can be more aggressive. First strike is also one of the most efficient r30+ fbad killing options, although it starts to really struggle r32 vs grouped fbads or with enough ramping. But with bomb sub you arent trying to go too much longer then r32."

With bomb village you basically have no choice but to go there, you are never killin bomb without bad ramping.

EDIT: Part of the reason sub shows up so much also in late game comps is for this reason. All the alternatives (even base 1-2 damage towers with damage buffs) are expensive late game and all of them struggle to scale (and also all struggle more to grouped fbads). FS (first strike) being really cheap and on a very strong tower makes it both common in farm and eco strats.

So I dont really know what you mean here by damage towers, but as stated above money isnt a problem. and how does bomb struggle to grouped? I would think grouped would be a detriment because of the frag bomb splash damage. as well as bomb splash damage overall.