
leverage software to lower barrier to entry

provide tooling too difficult and resource intensive for in house work

align incentives with customers; i.e. pay per use enabling scaling. api, saas, business in a box, etc... AWS is a huge deal in this space  with it companies have no need to worry about their own server infrastructures!
given the right business model, you grow directly alongside your consumer; i.e. twilio supports whatsapp substantially and considerably. stripe is probably the best example of this! all you have to do to accept payments is dispatch to strip : )
Aldo Leopold: "A Sand County Almanac" spiritual dangers to not owning a farm:

supposing that breakfast comes from the grocery

supposing that heat comes from the furnace
you can build these in house, eventually!
becoming a good theoretical computer science:

theoretical fields are so important to practical advancements

math and physics are vital to pursuing any theoretical field to become a good computer science researcher, study math. you will always have time to switch to the 'practical side of the force', but it's worth spending time to hone engineering
turing machines and the halting problem. the Entscheindunsproblem created the turing machine and the turing test  determined that the mathematics are decidable, evaluating a definite procedure to show if a math statement is true or false the question prompted an answer: the turing machine!
Mathematical Theory of communication set the foundation for telecommunications  but in and of itself is not! Shannon's information theory of entropy takes thermodynamic entropy and transforms it to impact communications
shannon theorem, shannonhartley theorem the class mip* of languages cna be decided by a verifier is equal to RE, recursively enumerable languages! read more, @adlarocha
 Open document (Hedgedoc) at https://doc.anagora.org/modern_suppliers
 Video call (Jitsi) at https://meet.jit.si/modern_suppliers