I think biggest problem is simple: Farmers want to get paid more; Consumers want to pay less;
Now if you wear the shoes of a gov policy wonk; then it will become clear; you want people to buy cheaply and sell safe milk profitably!
I feel you're talking as dairy or farmer - but looking at the entire sector.
Informal hawking of milk - is unsafe - and we need to move from there.
Most informal milk is owner produced and owner consumed.
So lets not romanticize primitivity and under-development.
We want milk like other sectors to be quickly formalized.
We have working model to copy from - KTDA and India's AMUL.
The idea is farmer should be paid 45shs for a litre of a milk - and I should buy that litre of milk for 70shs.
So 500ml should be bought for 30shs - not 60shs.
That way processed milk will compete with unpackaged milk - even a farmer will not take raw milk
They will buy processed safe milk....safe treated no microbes milk
The solution is to create or force massive economies of scales. You need to cut cost.
You cut branding, marketing and such cost by ensuring at least 80 percent of the market is selling milk branded MILK

very very cheaply - the rest can buy their coffee flavoured milk
You also need to massive cut - input cost - feeds - by massively investing in cheap quality feeds.
That is where quasi-gov or farmers cooperatives come in to consolidate the sector and create massive economies of scale
And it not monopoly - KTDA exist - but there are 150 private tea companies - competing for the same tea.Big organisation like KTDA create massive economies of scale that make small holder farming profitable
Folding brands to create one single brand is creating a monopoly. The question is why doesn't kcc squeeze all the other brands from the marketplace? There are more dairies coming up with different business model. Milk especially isn't processed only boiled to extend shelf life and packaged for distribution. The farmers needs to capture as much of the value chain as possible, this is the reason why informal milk industry is huge. Dairy board had tried to ban sale of "unprocessed" milk but obviously there was major revolt.
Our local dairy has coffee flavored yogurt, and its away of standing out in the marketplace. The focus should be increasing farmers productivity and creating new distribution model to capture more of the informal market.