The problem currently with crowd-funded securities offerings is the overall cost of capital (legal and regulatory), lack of liquidity post-raise, and that most of the good opportunities are scooped up by hungry VC's chasing returns in a fast money, low-interest environment. When the world is awash in easy capital, crowdfunding is simply too much of a hassle for solid companies.
In comes ICO's. It fixed a lot of the issues with crowdfunding. Low cost to start (just deploy a smart contract), instant liquidity, and global capital raising. Obviously there are tons of issues (breaking securities laws, sketchy companies, bubble mentality, and why actually do any work when you already have the money, among many others). But this shows that demand for small seed-stage companies is there.
The recent JOBS 3.0 act[0] will make 2 important changes to merge crowdfunding and ICO's. One is the change to accredited investor laws to allow people to prove investor competence without meeting arbitrary income / asset requirements. This was to solve the paradox of twenty-something MBA's on Wall Street giving professional advice on investments to wealthy people without they themselves being able to invest.
The second important change is to create "venture exchanges", which have been theoretically possible before, but have never been created. This will provide liquidity to early-stage startups at new regulated crypto exchanges like Coinbase, Poloniex, etc. I believe that blockchain, at a bare minimum, enforces standard protocols. Whether security trading needed blockchain or not to have protocol standardization accomplished is a separate argument, but either way the technology encouraged and allowed it to happen organically. Strict protocol enforcement of assets (ERC20, etc.) allows crypto exchanges all over the world to inter-operate, and allows securities to be traded much more freely all over the world as each country's crypto exchanges match their rules with local security laws. This will allow offerings based in the US to be bought and traded legally in Japan, South Africa, the EU, etc. It will also allow smaller companies to raise capital more cheaply by tapping into a global pool of investors.
[0] https://www.dandodiary.com/2018/07/articles/securities-laws/...