From hv_:

For the global adoption some major points needs to be ensured

Cheap and simple base layer, easy to understand and low risks that the base will change or enable illegal stuff ON PURPOSE.

That makes it easy to implement anything computers can do ON TOP

ETH was a nice experiment or still is, to let ppl get into such devs and risk analysis but pretty much as eMail is for sending text messages and oops attachments (like smart contracts containing exe files) those exe files are NEVER EVER automatically executed neither at send time nor at receiving time nor at open/ reading time , rather blocked, filtered out or checked against viruses etc.

Global adoption of autoexecution of code that can do Turing complete just anything - wont happen, especially if coded by poor script lang, that hase no proper compile time checking as java or c have.

First only sending txs at scale incl most simple defined conditions needs to be save and scaling, all the rest might come many years down the road...