On the other hand the cost of production and regulation are real threats to bitcoin which causes a correction every time it impacts bitcoin.
All the other factors drives the price of bitcoin upwards.
I don't doubt that cost of production is a factor that influences the actions of market participants (miners especially). Logically when the cost of production grows and the price of Bitcoin drops or remains stable they will increase the amount of BTC they sell to cover their operational expenses. However, because due to the limited nature of the supply the miners' impact on the market will likely drop as institutional adoption increases.
I can assume your statement as my experience exactly like that mining on small scale.
It's tough in these bear market... I just can't imagine those people who doing it in large scale, your daily weekly and monthly cost getting spike high while you produce a very small amount of bitcoin... That's a real and tough challenge but yeah that's one of the fundamental of bitcoin growth in price, we are heading to the next halving with a hope to see at least 500% growth!