You should make these open-source so others can benefit from them. There is a lack of tools like this in the Bitcoin world.

Why did this experience confirm that there is immense potential?

In general I think you should explore the idea, if Bitcoin is going to take off we need more people like you. However I think (maybe only in the short term) you will be able to make more money being a cloud engineer at a typical company. Cloud engineers get paid very well (especially in the USA) and I doubt you'd make more as a Bitcoin consultant.

The average person doesn't know how to use technology at all, if a company is going to accept Bitcoin it is going to have to be retard-proof, which is very difficult. For example, the company you mentioned is 100% going to have to accept LN BTC, no one is going to sit around for ~10 mins while they wait for their food, plus if fees are high, it's just not going to make economic sense to buy a $10 thing and pay $3 for a fee (and you wait for 10 mins, wtfbbq).

A business already has a lot to focus on, having to figure out how to accept BTC via the LN network is too much for them. It's probably better to sell these companies an all in one solution that allows them to accept BTC via LN and not think about it at all.

With all that said, I work in the same industry (SRE/Devops/Infra), feel free to send me a message if you want to bounce ideas off.

Good luck.